[SOLVED] Quick fix Konica-Minolta C759 list error codes

– Compatible Printer model: Konica-Minolta bizhub C759
– Konica-Minolta bizhub C759 Error Codes with quick guides:

Code: 10-01, 10-02, 10-40
Description: Misfeed at manual bypass feed section.
10-01 The leading edge of the paper is not turned ON the tray 1 vertical transport sensor (PS4) even after the lapse of a given period of time after the manual bypass tray starts to feed paper.
10-02 For paper fed from the manual bypass tray, loop forming has not been complete before a sheet enters the registration roller because the rise timing of load to perform registration is earlier than the rise timing of load to form a loop.
10-40 For paper fed from the manual bypass tray, the image write start signal permit continues to be disabled for a predetermined period of time after the timing of the image write start signal output.
– When the main power switch is turned ON, residual paper detection starts between each sensor. Paper jam of a sheet of paper left at the manual bypass feed section results, if the tray 1 vertical transport sensor (PS4) is turned from OFF to ON while the tray 1 paper feed sensor (PS5) is OFF.
Causes: • Bypass paper feed motor (M27) • Tray 1 vertical transport motor (M5) • Tray 1 vertical transport sensor (PS4) • Paper feed/transport drive board (PFTDB) • MFP board (MFPB)
Troubleshooting Guides: 1 Initial check items – – 2 PS4 I/O check, sensor check PFTDB CN14-8 (ON) 1-P 3 M5 load check • Check code: 28 • Multi code: 9, 10, 11, 12 PFTDB CN10-5 to 8 13-P 4 M27 load check • Check code: 28 • Multi code: 1, 2, 3, 4 PFTDB CN9-3 to 6 12-P 5 PFTDB F11 or F13 conduction check – – 6 Replace PFTDB. – – 7 Replace MFPB.

Code: 11-01, 11-02, 11-40
Description: Misfeed at tray 1 feed section.
11-01 The leading edge of the paper is not turned ON the tray 1 vertical transport sensor (PS4) even after the lapse of a given period of time after the tray 1 starts to feed paper.
11-02 For paper fed from the tray 1, due to a delay in paper arrival, loop forming in front of the registration roller is not complete before the rise timing of the registration motor.
11-40 For paper fed from the tray 1, the image write start signal permit continues to be disabled for a predetermined period of time after the timing of the image write start signal output.
– Paper jam of a sheet of paper left at the tray 1 feed section results, if the tray 1 vertical transport sensor (PS4) is turned ON when the main power switch is turned ON, a door is opened and closed, or a misfeed or malfunction is reset.
– When the main power switch is turned ON, residual paper detection starts between each sensor. Paper jam of a sheet of paper left at the tray 1 feed section results, if the tray 1 vertical transport sensor (PS4) is turned from OFF to ON while the tray 1 paper feed sensor (PS5) is OFF.
Causes: • Paper feed motor (M22) • Tray 1 vertical transport motor (M5) • Tray 1 paper feed clutch (CL1) • Tray 1 vertical transport sensor (PS4) • Tray 1 paper feed sensor (PS5) • Paper feed/transport drive board (PFTDB) • MFP board (MFPB)
Troubleshooting Guides: 1 Initial check items – – 2 PS4 I/O check, sensor check PFTDB CN14-8 (ON) 1-P 3 PS5 I/O check, sensor check PFTDB CN14-5 (ON) 1-P 4 CL1 load check • Check code: 20 • Multi code: 1 PFTDB CN14-14 (REM) 2-P 5 M5 load check • Check code: 28 • Multi code: 9, 10, 11, 12 PFTDB CN10-5 to 8 13-P 6 M22 load check • Check code: 28 • Multi code: 5, 6, 7, 8 PFTDB CN10-1 to 4 14-P 7 PFTDB F11, F12, or F13 conduction check – – 8 Replace PFTDB. – – 9 Replace MFPB.

Code: 12-01, 12-40
Description: Misfeed at tray 2 feed section
12-01 The leading edge of the paper is not turned ON the tray 2 vertical transport sensor (PS12) even after the lapse of a given period of time after the tray 2 starts to feed paper.
12-40 For paper fed from the tray 2, the image write start signal permit continues to be disabled for a predetermined period of time after the timing of the image write start signal output.
– Paper jam of a sheet of paper left at the tray 2 feed section results, if the tray 2 vertical transport sensor (PS12) is turned ON when the main power switch is turned ON, a door is opened and closed, or a misfeed or malfunction is reset.
– When the main power switch is turned ON, residual paper detection starts between each sensor. Paper jam of a sheet of paper left at the tray 2 feed section results, if the tray 2 vertical transport sensor (PS12) is turned from OFF to ON.
Causes: • Paper feed motor (M22) • Tray 2 vertical transport motor (M7) • Tray 2 paper feed clutch (CL2) • Tray 2 vertical transport sensor (PS12) • Tray 2 paper feed sensor (PS13) • Paper feed/transport drive board (PFTDB) • MFP board (MFPB)
Troubleshooting Guides: 1 Initial check items – – 2 PS12 I/O check, sensor check PFTDB CN12-10 (ON) 3-P 3 PS13 I/O check, sensor check PFTDB CN12-7 (ON) 3-P 4 CL2 load check • Check code: 20 • Multi code: 2 PFTDB CN12-1 (REM) 2-P 5 M7 load check • Check code: 28 • Multi code: 13, 14, 15, 16 PFTDB CN10-9 to 12 13-P 6 M22 load check • Check code: 28 • Multi code: 5, 6, 7, 8 PFTDB CN10-1 to 4 14-P 7 PFTDB F11, F12, or F13 conduction check – – 8 Replace PFTDB. – – 9 Replace MFPB.

Code: 13-01, 13-40
Description: Misfeed at tray 3 feed section.
13-01 The leading edge of the paper is not turned ON (block) the tray 3 paper feed sensor (PS21) even after the lapse of a given period of time after the tray 3 starts to feed paper.
13-40 For paper fed from the tray 3, the image write start signal permit continues to be disabled for a predetermined period of time after the timing of the image write start signal output.
– Paper jam of a sheet of paper left at the tray 3 feed section results, if the tray 3 paper feed sensor (PS21) is turned ON (blocked) when the main power switch is turned ON, a door is opened and closed, or a misfeed or malfunction is reset.
Causes: • LCC transport motor (M25) • Tray 3 paper feed clutch (CL5) • Tray 3 paper feed sensor (PS21) • Paper feed/transport drive board (PFTDB) • MFP board (MFPB
Troubleshooting Guides: 1 Initial check items – – 2 PS21 I/O check, sensor check PFTDB CN17-9 (ON) 6-X 3 CL5 load check • Check code: 20 • Multi code: 3 PFTDB CN16-5 (REM) 5-X 4 M25 load check • Check code: 28 • Multi code: 25, 26, 27, 28 PFTDB CN13-1 (DC24V) PFTDB CN13-4 (START/STOP) 11-X 5 PFTDB F12 or F15 conduction check – – 6 Replace PFTDB. – – 7 Replace MFPB.

Code: 14-01, 14-40
Description: Misfeed at tray 4 feed section.
14-01 The leading edge of the paper does not turn ON (unblock) the tray 4 paper feed sensor (PS26) even after the lapse of a given period of time after the tray 4 starts to feed paper.
14-40 For paper fed from the tray 4, the image write start signal permit continues to be disabled for a predetermined period of time after the timing of the image write start signal output.
– Paper jam of a sheet of paper left at the tray 4 feed section results, if the tray 4 paper feed sensor (PS26) is turned ON (unblocked) when the main power switch is turned ON, a door is opened and closed, or a misfeed or malfunction is reset.
Causes: • LCC transport motor (M25) • Tray 4 paper feed clutch (CL7) • Tray 4 paper feed sensor (PS26) • Paper feed/transport drive board (PFTDB) • MFP board (MFPB)
Troubleshooting Guides: 1 Initial check items – – 2 PS26 I/O check, sensor check PFTDB CN19-3 (ON) 7-X 3 CL7 load check • Check code: 20 • Multi code: 4 PFTDB CN18-2 (REM) 6 to 7-X 4 M25 load check • Check code: 28 • Multi code: 25, 26, 27, 28 PFTDB CN13-1 (DC24V) PFTDB CN13-4 (START/STOP) 11-X 5 PFTDB F12 or F15 conduction check – – 6 Replace PFTDB. – – 7 Replace MFPB.

Code: 15-01, 15-40
Description: External LCT feed section (When LU-205 or LU-303 is installed)
15-01 The leading edge of the paper is not turned ON the LU paper feed sensor (PS3) even after the lapse of a given period of time after the external LCT starts to feed paper.
15-40 For paper fed from the external LCT, the image write start signal permit continues to be disabled for a predetermined period of time after the timing of the image write start signal output.
Causes: • LU paper feed motor (M2) • LU transport motor (M3) • LU paper feed sensor (PS3) • LU drive board (LUDB) • Paper feed/transport drive board (PFTDB)
Troubleshooting Guides: 1 Initial check items – – 2 PS3 I/O check, sensor check LUDB CN5-8 (ON) LU-205/LU-303 4-G 3 M2 load check • Check code: 28 • Multi code: 17, 18, 19, 20 LUDB CN4-5 to 8 LU-205/LU-303 3-G 4 M3 load check • Check code: 28 • Multi code: 21, 22, 23, 24 LUDB CN4-1 to 4 LU-205/LU-303 3-G 5 Replace LUDB. (LU-205/LU-303) – – 6 PFTDB F1 or F4 conduction check – – 7 Replace PFTDB.

Code: 17-20
Description: External LCT transport section (When LU-205 or LU-303 is installed)
17-20 The tray 2 vertical transport sensor (PS12) is not turned ON even after the set period of time has elapsed after the LU paper feed sensor (PS3) turns ON by a paper.
– Paper jam of a sheet of paper left at the external LCT transport section results, if the LU paper feed sensor (PS3) is turned ON when the main power switch is turned ON, a door is opened and closed, or a misfeed or malfunction is reset.
Causes: • LU transport motor (M3) • Tray 2 vertical transport motor (M7) • LU paper feed sensor (PS3) • Tray 2 vertical transport sensor (PS12) • LU drive board (LUDB) • Paper feed/transport drive board (PFTDB)
Troubleshooting Guides: 1 Initial check items – – 2 PS3 I/O check, sensor check LUDB CN5-8 (ON) LU-205/LU-303 4-G 3 PS12 I/O check, sensor check PFTDB CN12-10 (ON) 3-P 4 M3 load check • Check code: 28 • Multi code: 21, 22, 23, 24 LUDB CN4-1 to 4 LU-205/LU-303 3-G 5 M7 load check • Check code: 28 • Multi code: 13, 14, 15, 16 PFTDB CN10-9 to 12 13-P 6 Replace LUDB. (LU-205/LU-303) – – 7 PFTDB F1 or F4 conduction check – – 8 Replace PFTDB.

Code: 17-30, 17-31
Description: Tray 3/4 horizontal transport section
17-30 The horizontal transport sensor (PS29) is not turned ON (blocked) even after the set period of time has elapsed after the tray 3 paper feed sensor (PS3) turns ON (block) by a paper.
17-31 The LCC vertical transport sensor (PS28) is not turned ON even after the set period of time has elapsed after the horizontal transport sensor (PS29) turns ON (block) by a paper.
– Paper jam of a sheet of paper left at the tray 3/4 horizontal transport section results, if the horizontal transport sensor (PS29) is turned ON (blocked) when the main power switch is turned ON, a door is opened and closed, or a misfeed or malfunction is reset.
Causes: • LCC transport motor (M25) • Tray 3 transport clutch (CL6) • Horizontal transport clutch (CL3) • Tray 3 paper feed sensor (PS21) • Horizontal transport sensor (PS29) • LCC vertical transport sensor (PS28) • Paper feed/transport drive board (PFTDB) • MFP board (MFPB)
Troubleshooting Guides: 1 Initial check items – – 2 PS21 I/O check, sensor check PFTDB CN17-9 (ON) 6-X 3 PS28 I/O check, sensor check PFTDB CN15-15 (ON) 10-X 4 PS29 I/O check, sensor check PFTDB CN15-13 (ON) 10-X 5 CL3 load check • Check code: 21 • Multi code: 2 PFTDB CN15-5 (REM) 9-X 6 CL6 load check • Check code: 21 • Multi code: 1 PFTDB CN17-10 (REM) 6-X 7 M25 load check • Check code: 28 • Multi code: 25, 26, 27, 28 PFTDB CN13-1 (DC24V) PFTDB CN13-4 (START/STOP) 11-X 8 PFTDB F12 or F15 conduction check – – 9 Replace PFTDB. 10 Replace MFPB.

Code: 17-40, 17-41
Description: Tray 3/4 intermediate transport roller section
17-40 The LCC vertical transport sensor (PS28) is not turned ON even after the set period of time has elapsed after the tray 4 paper feed sensor (PS26) turns ON (unblock) by a paper.
17-41 The tray 2 vertical transport sensor (PS12) is not turned ON even after the set period of time has elapsed after the LCC vertical transport sensor (PS28) turns ON by a paper.
– Paper jam of a sheet of paper left at the tray 3/4 intermediate transport roller section results, if the LCC vertical transport sensor (PS28) is turned ON when the main power switch is turned ON, a door is opened and closed, or a misfeed or malfunction is reset.
Causes: • LCC transport motor (M25) • LCC vertical transport motor (M26) • Tray 2 vertical transport motor (M7) • Tay4 paper feed clutch (CL7) • Tray 2 vertical transport sensor (PS12) • Tray 4 paper feed sensor (PS26) • LCC vertical transport sensor (PS28) • Paper feed/transport drive board (PFTDB) • MFP board (MFPB)
Troubleshooting Guides: 1 Initial check items – – 2 PS12 I/O check, sensor check PFTDB CN12-10 (ON) 3-P 3 PS26 I/O check, sensor check PFTDB CN19-3 (ON) 7-X 4 PS28 I/O check, sensor check PFTDB CN15-15 (ON) 10-X 5 CL7 load check • Check code: 20 • Multi code: 4 PFTDB CN18-2 (REM) 6 to 7-X 6 M25 load check • Check code: 28 • Multi code: 25, 26, 27, 28 PFTDB CN13-1 (DC24V) PFTDB CN13-4 (START/STOP) 11-X 7 M26 load check • Check code: 28 • Multi code: 29, 30, 31, 32 PFTDB CN11-1 to 4 10-X 8 M7 load check • Check code: 28 • Multi code: 13, 14, 15, 16 PFTDB CN10-9 to 12 13-P 9 PFTDB F11, F12, F13, or F15 conduction check – – 10 Replace PFTDB. – – 11 Replace MFPB.

Code: 20-01, 20-02, 20-03, 20-20
Description: Misfeed at vertical transport section
20-01 The registration sensor (PS38) is not turned ON (unblocked) even after the lapse of a given period of time after the tray 1 vertical transport sensor (PS4) turns ON by a paper.
20-02 For paper fed from the tray 2, tray 3, tray 4 or LU-205/LU-303, loop forming has not been complete before a sheet enters the registration roller because the rise timing of load to perform registration is earlier than the rise timing of load to form a loop.
20-03 The registration sensor (PS40) is not turned ON even after the lapse of a given period of time after the tray 1 vertical transport sensor (PS4) turns ON by a paper.
20-20 The tray 1 vertical transport sensor (PS4) is not turned ON even after the lapse of a given period of time after the tray 2 vertical transport sensor (PS12) turns ON by a paper.
Causes: • Tray 1 vertical transport motor (M5) • Tray 2 vertical transport motor (M7) • Tray 1 vertical transport sensor (PS4) • Tray 2 vertical transport sensor (PS12) • Registration sensor (PS38) • OHP sensor (PS40) • Paper feed/transport drive board (PFTDB) • MFP board (MFPB)
Troubleshooting Guides: 1 Initial check items – – 2 PS4 I/O check, sensor check PFTDB CN14-8 (ON) 1-P 3 PS12 I/O check, sensor check PFTDB CN12-10 (ON) 3-P 4 PS38 I/O check, sensor check PFTDB CN2-6 (ON) 4-P 5 PS40 I/O check, sensor check PFTDB CN2-2 (DETECT) PFTDB CN2-3 (REM) 4-P 6 M5 load check • Check code: 28 • Multi code: 9, 10, 11, 12 PFTDB CN10-5 to 8 13-P 7 M7 load check • Check code: 28 • Multi code: 13, 14, 15, 16 PFTDB CN10-9 to 12 13-P 8 PFTDB F13 conduction check – – 9 Replace PFTDB. – – 10 Replace MFPB.

Code: 30-03
Description: Misfeed at 2nd transfer section
30-03 The paper exit sensor (PS39) is not turned ON (unblocked) even after the set period of time has elapsed after the registration sensor (PS38) turns ON (unblocked) by a paper. – Paper jam of a sheet of paper left at the 2nd transfer section results, if the registration sensor (PS38) is turned ON (unblocked) when the main power switch is turned ON, a door is opened and closed, or a misfeed or malfunction is reset. – Paper jam of a sheet of paper left at the 2nd transfer section results, if the OHP sensor (PS40) is turned ON when the main power switch is turned ON, a door is opened and closed, or a misfeed or malfunction is reset. – When the main power switch is turned ON, residual paper detection starts between each sensor. Paper jam of a sheet of paper left at the 2nd transfer section results, if the registration sensor (PS38) or paper exit sensor (PS39) is turned from OFF (unblocked) to ON (blocked).
Causes: • Registration motor (M2) • Fusing motor (M30) • Registration sensor (PS38) • OHP sensor (PS40) • Paper exit sensor (PS39) • Paper feed/transport drive board (PFTDB) • MFP board (MFPB)
Troubleshooting Guides: 1 Initial check items – – 2 PS38 I/O check, sensor check PFTDB CN2-6 (ON) 4-P 3 PS40 I/O check, sensor check PFTDB CN2-2 (DETECT) PFTDB CN2-3 (REM) 4-P 4 PS39 I/O check, sensor check PFTDB CN2-12 (ON) 5-P 5 M2 load check • Check code: 26 • Multi code: 1, 2, 3, 4 PFTDB CN7-1 to 4 8-P 6 M30 load check • Check code: 45 • Multi code: 1, 2, 3, 4, 5, 6 MFPB CN28E-1 (DC24V) MFPB CN28E-4 (REM) MFPB CN28E-7 (LOCK) 7 PFTDB F16 conduction check – – 8 Replace PFTDB. – – 9 MFPB F16E conduction check – – 10 Replace MFPB.

Code: 32-01, 32-05, 32-30
Description: Misfeed at exit section.
32-01 The ADU paper passage sensor/1 (PS47) is not turned ON (blocked) even after the lapse of a given period of time after the reverse sequence is started.
32-05 The paper exit sensor (PS39) is not turned OFF (blocked) even after the lapse of a given period of time after PS3 turns ON (unblock) by a paper.
32-30 A trouble of the heating roller assy’s failure to turn has been detected during a print cycle.
– Paper jam of a sheet of paper left at the exit section results, if the paper exit sensor (PS39) is turned ON (unblocked) when the main power switch is turned ON, a door is opened and closed, or a misfeed or malfunction is reset.
Causes: • Exit motor (M4) • Fusing motor (M30) • ADU transport motor/1 (M31) • Reverse motor (M33) • Gate switch solenoid (SD1) • Paper exit sensor (PS39) • ADU paper passage sensor/1 (PS47) • Paper feed/transport drive board (PFTDB) • MFP board (MFPB)
Troubleshooting Guides: 1 Initial check items – – 2 PS39 I/O check, sensor check PFTDB CN2-12 (ON) 5-P 3 PS47 I/O check, sensor check PFTDB CN28-3 (ON) 6-P 4 M4 load check • Check code: 27 • Multi code: 1, 2, 3, 4 MFPB CN19E-13 to 16 10-K 5 M30 load check • Check code: 45 • Multi code: 1, 2, 3, 4, 5, 6 MFPB CN28E-1 (DC24V) MFPB CN28E-4 (REM) MFPB CN28E-7 (LOCK) 7-K 6 M31 load check • Check code: 85 • Multi code: 1, 2, 3, 4 PFTDB CN28-14 to 17 8-P 7 M33 load check • Check code: 84 • Multi code: 1, 2, 3, 4, 5, 6, 7, 8 MFPB CN19E-9 to 12 10-K 8 SD1 load check • Check code: 83 • Multi code: 0 MFPB CN19E-7 (DRIVE) 10-K 9 PFTDB F10 conduction check – – 10 Replace PFTDB. – – 11 MFPB F13E or F16E conduction check – – 12 Replace MFPB.

Code: 66-02, 66-12
Description: Misfeed at DF paper feed section.
66-02 The after separate sensor (PS4) is not turned ON after a lapse of a given time after the take-up motor (M1) is turned ON.
66-12 A StreetPass communication occurs between the DF and the controller.
– Paper jam of a sheet of paper left at the DF paper feed section results, if the after separate sensor (PS4) is turned ON when the main power switch is turned ON, a door is opened and closed, or a misfeed or malfunction is reset.
Causes: • Take-up motor (M1) • After separate sensor (PS4) • DF control board (DFCB) • MFP board (MFPB)
Troubleshooting Guides: 1 Initial check items – – 2 PS4 I/O check, sensor check DFCB CN6-5 (ON) DF 7-J 3 M1 load check • Check code: 60 • Multi code: 1, 2, 3 DFCB CN3-1 to 4 DF 12-C 4 DFCB ICP2 or ICP10 conduction check. – – 5 Replace DFCB. – – 6 Replace MFPB.

Code: 66-03, 66-13, 66-23, 66-33
Description: Misfeed at DF transport section
66-03 The after separate sensor (PS4) is not turned OFF even after the set period of time has elapsed after it is turned ON by the paper.
66-13 The registration sensor (PS5) is not turned ON even after the lapse of a given period of time after the paper has turned ON the after separate sensor (PS4).
66-23 The registration sensor (PS5) is not turned OFF even after the lapse of a given period of time after the paper has turned OFF the after separate sensor (PS4).
66-33 The before read sensor (PS6) is not turned ON after a lapse of a given time after a loop is formed and the registration motor (M2) is activated.
– Paper jam of a sheet of paper left at the DF transfer section results, if the registration sensor (PS5) is turned ON when the main power switch is turned ON, a door is opened and closed, or a misfeed or malfunction is reset.
Causes: • Registration motor (M2) • Take-up motor (M1) • Registration sensor (PS5) • After separate sensor (PS4) • Before read sensor (PS6) • DF control board (DFCB)
Troubleshooting Guides: 1 Initial check items – – 2 PS5 I/O check, sensor check DFCB CN6-17 (ON) DF 9-J 3 PS4 I/O check, sensor check DFCB CN6-5 (ON) DF 7-J 4 PS6 I/O check, sensor check DFCB CN11-2 (ON) DF 1-C 5 M1 load check • Check code: 60 • Multi code: 1, 2, 3 DFCB CN3-1 to 4 DF 12-C 6 M2 load check • Check code: 60 • Multi code: 17, 18, 19, 20 DFCB CN3-5 to 8 DF 11-C 7 DFCB ICP3 or ICP15 conduction check. – – 8 Replace DFCB.

Code: 66-04, 66-14
Description: Misfeed at DF paper exit section
66-04 The exit sensor (PS7) is not turned ON (unblocked) even after the set period of time has elapsed after the before read sensor (PS6) is turned ON by the paper.
66-14 The exit sensor (PS7) is not turned OFF even after the lapse of a given period of time after the paper has turned OFF the before read sensor (PS6).
– Paper jam of a sheet of paper left at the exit section results, if the exit sensor (PS7) is turned ON (unblocked) when the main power switch is turned ON, a door is opened and closed, or a misfeed or malfunction is reset.
Causes: • Paper feed motor (M4) • Before read sensor (PS6) • Exit sensor (PS7) • DF control board (DFCB)
Troubleshooting Guides: 1 Initial check items – – 2 PS6 I/O check, sensor check DFCB CN11-3 (ON) DF 1-C 3 PS7 I/O check, sensor check DFCB CN13-2 (ON) DF 7-C 4 M4 load check • Check code: 60 • Multi code: 49, 50, 51, 52 DFCB CN15-1 to 4 DF 11-C 5 DFCB ICP8 conduction check. – – 6 Replace DFCB.

Code: 66-05, 66-06
Description: Misfeed at DF image reading section
66-05 The after separate sensor (PS6) is not turned OFF even after the lapse of a given period of time after the paper has turned OFF the registration sensor (PS6).
66-06 The before read sensor (PS6) is turned ON earlier than a given period of time after the paper has turned OFF the before read sensor (PS6) during original transportation.
– Paper jam of a sheet of paper left at the DF image reading section results, if the before read sensor (PS6) is turned ON (unblocked) when the main power switch is turned ON, a door is opened and closed, or a misfeed or malfunction is reset.
Causes: • Reading motor (M3) • Reading roller pressure/retraction motor (M6) • Registration sensor (PS5) • Before read sensor (PS6) • DF control board (DFCB)
Troubleshooting Guides: 1 Initial check items – – 2 Make the adjustment of original stop position. – – 3 PS5 I/O check, sensor check DFCB CN6-17 (ON) DF 9-J 4 PS6 I/O check, sensor check DFCB CN11-2 (ON) DF 1-C 5 M3 load check • Check code: 60 • Multi code: 33, 34, 35 DFCB CN2-1 to 6 DF 12-C 6 M6 load check • Check code: 60 • Multi code: 81, 82 DFCB CN4-1 to 2 DF 10-C 7 DFCB ICP1 or ICP16 conduction check. – – 8 Replace DFCB.

Code: 66-07
Description: Misfeed at DF paper feed/transport/image reading/turnover/paper exit section. Due to a remaining sheet of paper that has not been detected by sensors, before the start of a job, a sensor detects the sheet at an unexpected timing.
Causes: • After separate sensor (PS4) • Registration sensor (PS5) • Before read sensor (PS6) • Exit sensor (PS7) • DF control board (DFCB)
Troubleshooting Guides: 1 Initial check items – – 2 Make the adjustment of original stop position. – – 3 Make the adjusting the pressure of the separation roller. – – 4 PS4 I/O check, sensor check DFCB CN6-5 (ON) DF 7-J 5 PS5 I/O check, sensor check DFCB CN6-17 (ON) DF 9-J 6 PS6 I/O check, sensor check DFCB CN11-2 (ON) DF 1-C 7 PS7 I/O check, sensor check DFCB CN13-3 (ON) DF 7-C 8 Replace DFCB.

Code: 66-08
Description: Double feed detection jam. Remained paper is found at the multi feed detection.
Causes: • Multi feed detection board/1 (transmitter) (MFDB/1) • Multi feed detection board/2 (receiver) (MFDB/2) • Sensor control board (SCB) • DF control board (DFCB)
Troubleshooting Guides: 1 Initial check items – – 2 Perform the Multi-Feed DetectionAdj. – – 3 Replace MFDB/1. – – 4 Replace MFDB/2. – – 5 Replace SCB. – – 6 DFCB ICP11 conduction check. – – 7 Replace DFCB.

Code: 66-54
Description: DF controller jam. The lift up lower sensor (PS3) is not blocked after a lapse of a given time after the last sheet of original is fed out.
Causes: • Take-up motor (M1) • Registration motor (M2) • Reading motor (M3) • Paper feed motor (M4) • Reading roller pressure/retraction motor (M6) • After separate sensor (PS4) • Registration sensor (PS5) • Before read sensor (PS6) • Exit sensor (PS7) • DF control board (DFCB)
Troubleshooting Guides: 1 Initial check items – – 2 PS4 I/O check, sensor check DFCB CN6-5 (ON) DF 11-C 3 PS5 I/O check, sensor check DFCB CN6-17 (ON) DF 9-J 4 PS6 I/O check, sensor check DFCB CN11-3 (ON) DF 1-C 5 PS7 I/O check, sensor check DFCB CN13-3 (ON) DF 7-C 6 M1 load check • Check code: 60 • Multi code: 1, 2, 3 DFCB CN3-1 to 4 DF 12-C 7 M2 load check • Check code: 60 • Multi code: 17, 18, 19, 20 DFCB CN3-5 to 8 DF 11-C 8 M3 load check • Check code: 60 • Multi code: 33, 34, 35 DFCB CN2-1 to 6 DF 12-C 9 M4 load check • Check code: 60 • Multi code: 49, 50, 51, 52 DFCB CN15-1 to 4 DF 11-C 10 M6 load check • Check code: 60 • Multi code: 81, 82 DFCB CN4-1 to 2 DF 10-C 11 Replace DFCB.

Code: 72-11
Description: Misfeed at FS transport section.
<When FS-537 or FS-537SD is installed> The FNS middle sensor (PS36) is not turned ON even after the set period of time has elapsed after the FNS entrance sensor (PS34) is turned ON by the paper.
Causes: <When FS-537 or FS-537SD is installed> • FNS entrance sensor (PS34) • FNS middle sensor (PS36) • FS control board (FSCB)
Troubleshooting Guides: 1 Initial check items – – 2 PS34 I/O check, sensor check FSCB J8<A>-5 (ON) FS-537/FS-537SD 7-D 3 PS36 I/O check, sensor check FSCB J12<A>-10 (ON) FS-537/FS-537SD 16-D 4 Replace FSCB.

Code: 72-14
Description: Misfeed at FS transport section.
<When FS-536 or FS-536SD is installed> The saddle exit sensor (PS5) is not turned ON even after the set period of time has elapsed after the main tray exit sensor (PS16) is turned ON by the paper.
<When FS-537 or FS-537SD is installed> The SD discharge sensor (PS35) is not turned ON even after the set period of time has elapsed after the main tray exit sensor (PS37) is turned ON by the paper.
Causes: <When FS-536 or FS-536SD is installed> • Saddle exit sensor (PS5) • Main tray exit sensor (PS16) • FS control board (FSCB)
<When FS-537 or FS-537SD is installed> • SD discharge sensor (PS35) • Main tray exit sensor (PS37) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536 or FS-536SD is installed. 1 Initial check items – – 2 PS5 I/O check, sensor check FSCB J5-2 (ON) FS-536/FS-536SD 16-K 3 PS16 I/O check, sensor check FSCB J9-4 (ON) FS-536/FS-536SD 11-C 4 Replace FSCB.
(b) When FS-537 or FS-537SD is installed. Initial check items – – 2 PS35 I/O check, sensor check FSCB J15-7 (ON) FS-537/FS-537SD 15 to 16-K to L 3 PS37 I/O check, sensor check FSCB J12-14 (ON) FS-537/FS-537SD 18-D 4 Replace FSCB.

Code: 72-15
Description: Misfeed at FS transport section.
<When FS-536 or FS-536SD is installed> The saddle exit sensor (PS5) is not turned OFF even after the set period of time has elapsed after it is turned ON.
<When FS-537 or FS-537SD is installed> The SD discharge sensor (PS35) is not turned OFF even after the set period of time has elapsed after it is turned ON by the paper.
Causes: <When FS-536 or FS-536SD is installed> • Saddle exit sensor (PS5) • FS control board (FSCB)
<When FS-537 or FS-537SD is installed> • SD discharge sensor (PS35) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536 or FS-536SD is installed. 1 Initial check items – – 2 PS5 I/O check, sensor check FSCB J5-2 (ON) FS-536/FS-536SD 16-K 3 Replace FSCB.
(b) When FS-537 or FS-537SD is installed. 1 Initial check items – – 2 PS35 I/O check, sensor check FSCB J15-7 (ON) FS-537/FS-537SD 15 to 16-K to L 3 Replace FSCB.

Code: 72-16
Description: Misfeed at FS transport section.
<When FS-536 or FS-536SD is installed> The FNS entrance sensor (PS4) is not turned ON even after the set period of time has elapsed after the RU transport sensor (PS60) is turned ON (blocked) by the paper.
<When FS-537 or FS-537SD is installed> The FNS entrance sensor (PS34) is not turned ON even after the set period of time has elapsed after the RU transport sensor (PS60) is turned ON (blocked) by the paper.
Causes: <When FS-536 or FS-536SD is installed> • RU transport sensor (PS60) • FNS entrance sensor (PS4) • FS control board (FSCB)
<When FS-537 or FS-537SD is installed> • RU transport sensor (PS60) • FNS entrance sensor (PS34) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536 or FS-536SD is installed. 1 Initial check items – – 2 PS60 I/O check, sensor check FSCB J6-7 (ON) FS-536/FS-536SD 12-K 3 PS4 I/O check, sensor check FSCB J4-9 (ON) FS-536/FS-536SD 15-C 4 Replace FSCB. – –
(b) When FS-537 or FS-537SD is installed. 1 Initial check items – – 2 PS60 I/O check, sensor check FSCB J8-11 (ON) FS-537/FS-537SD 9-D 3 PS34 I/O check, sensor check FSCB J8<A>-5 (ON) FS-537/FS-537SD 7-D 4 Replace FSCB.

Code: 72-17
Description: Misfeed at FS transport section. <When FS-536 or FS-536SD is installed> The FNS entrance sensor (PS4) is not turned OFF even after the set period of time has elapsed after it is turned ON by the paper.
<When FS-537 or FS-537SD is installed> The FNS entrance sensor (PS34) is not turned OFF even after the set period of time has elapsed after it is turned ON by the paper.
Causes: <When FS-536 or FS-536SD is installed> • FNS entrance sensor (PS4) • FS control board (FSCB)
<When FS-537 or FS-537SD is installed> • FNS entrance sensor (PS34) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536 or FS-536SD is installed. 1 Initial check items – – 2 PS4 I/O check, sensor check FSCB J4-9 (ON) FS-536/FS-536SD 15-C 3 Replace FSCB.
(b) When FS-537 or FS-537SD is installed. 1 Initial check items – – 2 PS34 I/O check, sensor check FSCB J8<A>-5 (ON) FS-537/FS-537SD 7-D 3 Replace FSCB.

Code: 72-18
Description: Misfeed at FS transport section.
<When FS-536 or FS-536SD is installed> • The main tray exit sensor (PS16) is not turned ON even after the set period of time has elapsed after the FNS entrance sensor (PS4) is turned ON by the paper. • While the buffer is controlled, the main tray exit sensor (PS16) is not tuned ON even after the set period of time has elapsed after the reverse rotation drive is started.
<When FS-537 or FS-537SD is installed> The Main tray exit sensor (PS37) is not turned ON even after the set period of time has elapsed after the FNS middle sensor (PS36) is turned ON by the paper.
Causes: <When FS-536 or FS-536SD is installed> • FNS entrance sensor (PS4) • Main tray exit sensor (PS16) • FS control board (FSCB)
<When FS-537 or FS-537SD is installed> • FNS middle sensor (PS36) • Main tray exit sensor (PS37) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536 or FS-536SD is installed. 1 Initial check items – – 2 PS4 I/O check, sensor check FSCB J4-9 (ON) FS-536/FS-536SD 15-C 3 PS16 I/O check, sensor check FSCB J9-4 (ON) FS-536/FS-536SD 11-C 4 Replace FSCB. – –
(b) When FS-537 or FS-537SD is installed. 1 Initial check items – – 2 PS36 I/O check, sensor check FSCB J12<A>-10 (ON) FS-537/FS-537SD 16-D 3 PS37 I/O check, sensor check FSCB J12-14 (ON) FS-537/FS-537SD 18-D 4 Replace FSCB.

Code: 72-19
Description: Misfeed at FS transport section.
<When FS-536 or FS-536SD is installed> The main tray exit sensor (PS16) is not turned OFF even after the set period of time has elapsed after it is turned ON by the paper.
<When FS-537 or FS-537SD is installed> The main tray exit sensor (PS37) is not turned OFF even after the set period of time has elapsed after it is turned ON by the paper.
Causes: <When FS-536 or FS-536SD is installed> • Main tray exit sensor (PS16) • FS control board (FSCB)
<When FS-537 or FS-537SD is installed> • Main tray exit sensor (PS37) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536 or FS-536SD is installed. 1 Initial check items – – 2 PS16 I/O check, sensor check FSCB J9-4 (ON) FS-536/FS-536SD 16-C 3 Replace FSCB.
(b) When FS-537 or FS-537SD is installed. 1 Initial check items – – 2 PS37 I/O check, sensor check FSCB J12-14 (ON) FS-537/FS-537SD 18-D 3 Replace FSCB.

Code: 72-21
Description: Misfeed at FS transport section.
<When FS-536 or FS-536SD is installed> The staple stacker paper detection sensor (PS31) is not turn OFF even after the set period of time has elapsed after the start of exiting paper.
<When FS-537 or FS-537SD is installed> The alignment plate paper detection sensor (PS32) is not turn OFF even after the set period of time has elapsed after the start of exiting paper.
Causes: <When FS-536 or FS-536SD is installed> • Staple stacker paper detection sensor (PS31) • FS control board (FSCB)
<When FS-537 or FS-537SD is installed> • Alignment plate paper detection sensor (PS32) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536 or FS-536SD is installed. 1 Initial check items – – 2 PS31 I/O check, sensor check FSCB J12-11 (ON) FS-536/FS-536SD 6-C 3 Replace FSCB.
(b) When FS-537 or FS-537SD is installed. 1 Initial check items – – 2 PS32 I/O check, sensor check FSCB J21-12 (ON) FS-537/FS-537SD 5-D 3 Replace FSCB.

Code: 72-22
Description: Misfeed at FS transport section.
<When FS-536 or FS-536SD is installed> The sub tray exit sensor (PS8) is not turned ON (blocked) even after the set period of time has elapsed after the paper reaches the paper transport acceleration point.
<When FS-537 or FS-537SD is installed> The sub tray exit sensor (PS24) is not turned ON (blocked) even after the set period of time has elapsed after the paper reaches the paper transport acceleration point.
Causes: <When FS-536 or FS-536SD is installed> • Sub tray exit sensor (PS8) • FS control board (FSCB)
<When FS-537 or FS-537SD is installed> • Sub tray exit sensor (PS24) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536 or FS-536SD is installed. 1 Initial check items – – 2 PS8 I/O check, sensor check FSCB J9-8 (ON) FS-536/FS-536SD 11-C 3 Replace FSCB. – –
(b) When FS-537 or FS-537SD is installed. 1 Initial check items – – 2 PS24 I/O check, sensor check FSCB J15-3 (ON) FS-537/FS-537SD 16-K to L 3 Replace FSCB.

Code: 72-23
Description: Misfeed at FS transport section.
<When FS-536 or FS-536SD is installed> The sub tray exit sensor (PS8) is not turned OFF (unblocked) even after the set period of time has elapsed after PS8 turns ON (block).
<When FS-537 or FS-537SD is installed> The sub tray exit sensor (PS24) is not turned OFF (unblocked) even after the set period of time has elapsed after PS24 turns ON (block).
Causes: <When FS-536 or FS-536SD is installed> • Sub tray exit sensor (PS8) • FNS entrance sensor (PS4) • Main tray exit sensor (PS16) • FS control board (FSCB)
<When FS-537 or FS-537SD is installed> • Sub tray exit sensor (PS24) • FNS entrance sensor (PS34) • FNS middle sensor (PS36) • Main tray exit sensor (PS37) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536 or FS-536SD is installed. 1 Initial check items – – 2 Clean the sensor of paper path. – – 3 PS8 I/O check, sensor check FSCB J9-8 (ON) FS-536/FS-536SD 11-C 4 Replace FSCB.
(b) When FS-537 or FS-537SD is installed. 1 Initial check items – – 2 Clean the sensor of paper path. – – 3 PS24 I/O check, sensor check FSCB J15-3 (ON) FS-537/FS-537SD 16-K to L 4 Replace FSCB.

Code: 72-25, 72-26
Description: Misfeed at SD paper exit section.
72-25 <When FS-536SD or FS-537SD is installed> The fold exit sensor (PS12) is not turned ON by the paper even after the set period of time has elapsed after the half-fold exit operation started.
72-26 <When FS-536SD or FS-537SD is installed> The fold exit sensor (PS12) is not turned OFF even after the set period of time has elapsed after it is turned ON by the paper.
Causes: <When FS-536SD or FS-537SD is installed> • Fold exit sensor (PS12) • SD control board (SDCB) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536SD or FS-537SD is installed. 1 Initial check items – – 2 PS12 I/O check, sensor check SDCB J9-2 (ON) FS-536/FS-536SD 5-P FS-537/FS-537SD 4-P 3 Replace SDCB. (FS-536SD/FS-537SD) – – 4 Replace FSCB. (FS-536SD/FS-537SD)

Code: 72-31, 72-34
Description: Misfeed at JS exit section.
72-31 <When FS-537+JS-602 or FS-537SD+JS-602 is installed> The job tray paper exit sensor (PS402) is not turned ON (unblocked) even after the set period of time has elapsed after the route change gate home sensor (PS21) turns OFF (unblock) by the paper.
72-34 <When FS-537+JS-602 or FS-537SD+JS-602 is installed> The job tray paper exit sensor (PS402) is not turned OFF (unblocked) even after the set period of time has elapsed after PS402 turns ON (block) by a paper.
Causes: <When FS-537+JS-602 or FS-537SD +JS-602 is installed> • Job tray paper exit sensor (PS402) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-537+JS-602 or FS-537SD+JS-602 is installed. 1 Initial check items 2 PS402 I/O check, sensor check FSCB J10-6 (ON) FS-537/FS-537SD 9-M 3 Replace FSCB.

Code: 72-35
Description: Misfeed at PI section. <When FS-537+PI-507 or FS-537SD+PI-507 is installed> • When a paper is fed from the upper tray, the paper entrance sensor /Lw (PS206) is not turned ON (unblocked) even after the set period of time has elapsed after the transfer clutch /Up (CL201) turns ON by a paper. • When a paper is fed from the lower tray, The paper entrance sensor /Lw (PS206) is not turned ON (unblocked) even after the set period of time has elapsed after the transfer clutch /Lw (CL202) turns ON by a paper.
Causes: <When FS-537+PI-507 or FS-537SD +PI-507 is installed> • Transfer clutch /Up (CL201) • Transfer clutch /Lw (CL202) • Paper entrance sensor /Lw (PS206) • PI drive board (PIDB) • FS control board (FSCB)
Troubleshooting Guides: 1 Initial check items – – 2 PS206 I/O check, sensor check PIDB CN53<A>-5 (ON) PI-507 10-C 3 CL201 operation check PIDB CN54-3 (ON) PI-507 6-C 4 CL202 operation check PIDB CN56-1 (ON) PI-507 9-C 5 PIDB ICP4 conduction check. – – 6 Replace PIDB. – – 7 Replace FSCB.

Code: 72-40, 72-41
Description: Misfeed at ZU section.
72-40 <When FS-537+ZU-609 or FS-537SD+ZU-609 is installed> The FNS middle sensor (PS36) is not turned OFF even after the set period of time has elapsed after it is turned ON by the paper.
71-41 <When FS-537+ZU-609 or FS-537SD+ZU-609 is installed> When the second fold is started in Z-fold mode, the FNS middle sensor (PS36) is not switched from ON to OFF by the paper after the set period of time has elapsed.
Causes: <When FS-537+ZU-609 or FS-537SD +ZU-609 is installed> • ZU transport motor (M500) • Folding guide motor (M501) • FNS middle sensor (PS36) • ZU drive board (ZUDB) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-537+ZU-609 or FS-537SD+ZU-609 is installed. 1 Initial check items – – 2 PS36 I/O check, sensor check FSCB J12<A>-10 (ON) FS-537/FS-537SD 16-D 3 M500 operation check ZUDB CN6-1 to 6 ZU-609 1 to 2-B 4 M501 operation check ZUDB CN6-9 to 12 ZU-609 2-B 5 ZUDB ICP1 or ICP2 conduction check. – – 6 Replace ZUDB. – – 7 Replace FSCB.

Code: 72-43
Description: Misfeed at PK JAM.
<When FS-536+PK-520 or FS-536SD+PK-520 is installed> The punch position sensor (PS2) is not turned ON (unblocked) after a lapse of a given time after the punch drive motor (M1) starts rotating.
<When FS-537+PK-523 or FS-537SD+PK-523 is installed> The PK punch home sensor/2 (PS301) is not turned ON (unblocked) after a lapse of a given time after the punch drive motor (M301) starts rotating.
– <When FS-537+PK-523 or FS-537SD+PK-523 is installed> Paper jam of a sheet of paper left at the PK section results, when the main power switch is turned ON, and the paper is detected by the paper size detect board (PSDTB).
Causes: <When FS-536+PK-520 or FS-536SD +PK-520 is installed> • Punch drive motor (M1) • Punch position sensor (PS2) • FS control board (FSCB)
<When FS-537+PK-523 or FS-537SD +PK-523 is installed> • Punch drive motor (M301) • PK punch home sensor/2 (PS301) • Punch control board (PKCB) • FS control board (FSCB)
Residual paper jam • Paper size detect board (PSDTB) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536+PK-520 or FS-536SD+PK-520 is installed. 1 Initial check items – – 2 PS2 I/O check, sensor check FSCB J7-2 (ON) FS-536/FS-536SD (PK-520) 13-K 3 M1 operation check FSCB J7-7 to 8 FS-536/FS-536SD (PK-520) 13-K 4 Replace FSCB. – –
(b) When FS-537+PK-523 or FS-537SD+PK-523 is installed. 1 Initial check items – – 2 PS301 I/O check, sensor check PKCB CN36-5 (ON) PK-523 3-C 3 M301 operation check PKCB CN35-1 to 3 PK-523 2-C 4 Replace PKCB. – – 5 Replace FSCB.
(c) Residual paper jam (When FS-537+PK-523 or FS-537SD+PK-523 is installed). 1 Initial check items – – 2 Adjust the sensitivity (light intensity) by selecting [Service Mode] -> [Finisher] -> [FS-FN adjustment] -> [Punch F. Sensor Intensity Adj.]. After adjustment, open and then close the front door, and check if the residual paper jam indication disappears. To turn off the main power switch, wait for more than 10 seconds until the residual paper jam indication disappears – – 3 Replace PSDTB. – – 4 Replace FSCB.

Code: 72-49
Description: Misfeed at PI section.
<When FS-537+PI-507 or FS-537SD+PI-507 is installed> The paper entrance sensor /Up (PS201) is not turned ON (unblocked) after a lapse of a given time after the transfer clutch /Up is turned ON.
Causes: <When FS-537+PI-507 or FS-537SD +PI-507 is installed> • Transfer clutch /Up (CL201) • Paper entrance sensor /Up (PS201) • PI drive board (PIDB) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-537+PI-507 or FS-537SD+PI-507 is installed. 1 Initial check items – – 2 PS201 I/O check, sensor check PIDB CN53<A>-2 (ON) PI-507 10-C 3 CL201 operation check PIDB CN54-3 (ON) PI-507 6-C 4 PIDB ICP4 conduction check. – – 5 Replace PIDB. – – 6 Replace FSCB.

Code: 72-50
Description: Misfeed at PI section
<When FS-537+PI-507 or FS-537SD+PI-507 is installed> The FNS entrance sensor (PS34) is not turned ON even after the set period of time has elapsed after the paper entrance sensor /Up (PS201) turns ON (unblock) by a paper.
Causes: <When FS-537+PI-507 or FS-537SD +PI-507 is installed> • Paper entrance sensor /Up (PS201) • FNS entrance sensor (PS34) • PI drive board (PIDB) • FS control board (FSCB)
Troubleshooting Guides: 1 Initial check items – – 2 PS201 I/O check, sensor check PIDB CN53<A>-2 (ON) PI-507 10-C 3 PS34 I/O check, sensor check FSCB J8<A>-5 (ON) FS-537/FS-537SD 7-D 4 PIDB ICP4 conduction check. – – 5 Replace PIDB. – – 6 Replace FSCB.

Code: 72-51
Description: Misfeed at PI section
<When FS-537+PI-507 or FS-537SD+PI-507 is installed> The FNS entrance sensor (PS34) is not turned ON even after the set period of time has elapsed after the paper entrance sensor /Lw (PS206) is turned ON by the paper.
Causes: <When FS-537+PI-507 or FS-537SD +PI-507 is installed> • Paper entrance sensor /Lw (PS206) • FNS entrance sensor (PS34) • PI drive board (PIDB) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-537+PI-507 or FS-537SD+PI-507 is installed. 1 Initial check items – – 2 PS206 I/O check, sensor check PIDB CN53<A>-5 (ON) PI-507 10-C 3 PS34 I/O check, sensor check FSCB J8<A>-5 (ON) FS-537/FS-537SD 7-D 4 PIDB ICP4 conduction check. – – 5 Replace PIDB. – – 6 Replace FSCB.

Code: 72-81
Description: Misfeed at FS staple section.
<When FS-536 or FS-536SD is installed> The stapler position sensor (center) (PS24) is not turned ON (blocked) or OFF (unblocked) even after the set period of time has elapsed after the side stapler movement motor (M13) turned ON.
<When FS-537 or FS-537SD is installed> The stapler position sensor (center) (PS20) is not turned ON (blocked) or OFF (unblocked) even after the set period of time has elapsed after the stapler movement motor (M19) turned ON.
Causes: <When FS-536 or FS-536SD is installed> • Side stapler movement motor (M13) • Stapler position sensor (center) (PS24) • FS control board (FSCB)
<When FS-537 or FS-537SD is installed> • Stapler movement motor (M19) • Stapler position sensor (center) (PS20) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536 or FS-536SD is installed. 1 Initial check items – – 2 M13 operation check FSCB J11<A>-1 to 4 FS-536/FS-536SD 4-C 3 PS24 I/O check, sensor check FSCB J11-6 (ON) FS-536/FS-536SD 5-C 4 Replace FSCB.
(b) When FS-537 or FS-537SD is installed. 1 Initial check items – – 2 M19 operation check FSCB J17-10 to 13 FS-537/FS-537SD 14-D 3 PS20 I/O check, sensor check FSCB J16-5 (ON) FS-537/FS-537SD 15-D 4 Replace FSCB.

Code: 72-84
Description: Misfeed at SD staple section.
<When FS-536SD or FS-537SD is installed> The stapler home position sensor/R does not turn ON even after the set period of time has elapsed after the staple operation started.
Causes: <When FS-536SD or FS-537SD is installed> • Staple unit • SD control board (SDCB) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536SD or FS-537SD is installed. 1 Initial check items – – 2 Replace the staple unit. (FS-536SD/FS-537SD) – – 3 Replace SDCB. (FS-536SD/FS-537SD) – – 4 Replace FSCB. (FS-536SD/FS-537SD)

Code: 72-85
Description: Misfeed at SD transport section. <When FS-536SD is installed> The SD entrance sensor (PS1) is not turned ON (blocked) even after the set period of time has elapsed after the saddle exit sensor (PS5) is turned ON by the paper.
<When FS-537SD is installed> The SD entrance sensor (PS1) is not turned ON (blocked) even after the set period of time has elapsed after the SD discharge sensor (PS35) is turned ON by the paper.
Causes: <When FS-536SD is installed> • SD entrance sensor (PS1) • Saddle exit sensor (PS5) • SD control board (SDCB) • FS control board (FSCB)
<When FS-537SD is installed> • SD entrance sensor (PS1) • SD discharge sensor (PS35) • SD control board (SDCB) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536SD is installed. 1 Initial check items – – 2 PS5 I/O check, sensor check FSCB J5-2 (ON) FS-536/FS-536SD 16-K 3 PS1 I/O check, sensor check SDCB J4-8 (ON) FS-536/FS-536SD 5-L 4 Replace SDCB. – – 5 Replace FSCB.
(b) When FS-537SD is installed. 1 Initial check items – – 2 PS35 I/O check, sensor check FSCB J15-7 (ON) FS-537/FS-537SD 15 to 16-K to L 3 PS1 I/O check, sensor check SDCB J4-8 (ON) FS-537/FS-537SD 4-K 4 Replace SDCB. – – 5 Replace FSCB.

Code: 72-86
Description: Misfeed at SD transport section.
<When FS-536SD or FS-537SD is installed> The SD entrance sensor (PS1) is not turned OFF (unblocked) even after the set period of time has elapsed after PS1 turns ON (block).
Causes: <When FS-536SD or FS-537SD is installed> • SD entrance sensor (PS1) • SD control board (SDCB) • FS control board (FSCB)
Troubleshooting Guides: (2) Procedure (a) When FS-536SD or FS-537SD is installed. 1 Initial check items – – 2 PS1 I/O check, sensor check SDCB J4-8 (ON) FS-536/FS-536SD 5-L FS-537/FS-537SD 4-K 3 Replace SDCB. (FS-536SD/FS-537SD) – – 4 Replace FSCB. (FS-536SD/FS-537SD)

Code: 72-87
Description: Misfeed at SD transport section.
<When FS-536SD or FS-537SD is installed> The center staple/fold stacker paper detect sensor (PS3) is not turned ON even after the set period of time has elapsed after the SD entrance sensor (PS1) turns ON (block) by a paper.
Causes: <When FS-536SD or FS-537SD is installed> • SD entrance sensor (PS1) • Center staple/fold stacker paper detect sensor (PS3) • SD control board (SDCB) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536SD or FS-537SD is installed. 1 Initial check items – – 2 PS1 I/O check, sensor check SDCB J4-3 (ON) FS-536/FS-536SD 4-K FS-537/FS-537SD 5-L 3 PS3 I/O check, sensor check SDCB J9-2 (ON) FS-536/FS-536SD 5-P FS-537/FS-537SD 5-P 4 Replace SDCB. (FS-536SD/FS-537SD) – – 5 Replace FSCB. (FS-536SD/FS-537SD)

Quick fix Konica-Minolta C759 list error codes

Solve Konica-Minolta bizhub C759 Error codes

Code: 75-42
Description: Misfeed at RU section
<When FS-536 or FS-536SD is installed> <When FS-537 or FS-537SD is installed> The RU transport sensor (PS60) is not turned ON (blocked) even after the set period of time has elapsed after the main body’s paper exit sensor (PS39) is turned ON (unblocked) by the paper.
Causes: <When FS-536 or FS-536SD is installed>
<When FS-537 or FS-537SD is installed>
• Paper exit sensor (PS39) • RU transport sensor (PS60) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536 or FS-536SD is installed. 1 Initial check items – – 2 PS39 I/O check, sensor check PFTDB CN2-12 (ON) 5-P 3 PS60 I/O check, sensor check FSCB J6-7 (ON) FS-536/FS-536SD 12-K 4 Replace FSCB.
(b) When FS-537 or FS-537SD is installed. 1 Initial check items – – 2 PS39 I/O check, sensor check PFTDB CN2-12 (ON) 5-P 3 PS60 I/O check, sensor check FSCB J8-15 (ON) FS-537/FS-537SD 9-D 4 Replace FSCB.

Code: 75-43
Description: Misfeed at RU section.
<When FS-536, FS-536SD, FS-537, or FS-537SD is installed> The RU transport sensor (PS60) is not turned OFF (unlocked) even after the set period of time has elapsed after it is turned ON (blocked).
Causes: <When FS-536, FS-536SD, FS-537, or FS-537SD is installed>
• RU transport sensor (PS60) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536 or FS-536SD is installed. 1 Initial check items 2 PS60 I/O check, sensor check FSCB J6-7 (ON) FS-536/FS-536SD 12-K 3 Replace FSCB.
(b) When FS-537 or FS-537SD is installed. 1 Initial check items – – 2 PS60 I/O check, sensor check FSCB J8-15 (ON) FS-537/FS-537SD 9-K 3 Replace FSCB.

Code: 92-01, 92-02, 92-03, 92-40
Description:
Misfeed at duplex pre-registration section.
92-01 The leading edge of the paper is not turn ON (unblock) the registration sensor (PS38) even after the lapse of a given period of time after a duplex paper feed sequence has been started.
92-02 For the second-side feed of paper in the duplex mode, loop forming has not been complete before the second side of a sheet enters the registration roller because the rise timing of load to perform registration is earlier than the rise timing of load to form a loop.
92-03 The leading edge of the paper does not turn ON the OHP sensor (PS40) even after the lapse of a given period of time after a duplex paper feed sequence has been started. 92-40 For the second-side feed of paper in the duplex mode, the image write start signal permit continues to be disabled for a predetermined period of time after the timing of the image write start signal output.
Causes: • ADU transport motor/1 (M31) • ADU transport motor/2 (M32) • Registration sensor (PS38) • OHP sensor (PS40) • Paper feed/transport drive board (PFTDB) • MFP board (MFPB)
Troubleshooting Guides: 1 Initial check items – – 2 PS38 I/O check, sensor check PFTDB CN2-6 (ON) 4-P 3 PS40 I/O check, sensor check PFTDB CN2-2 (DETECT) PFTDB CN2-3 (REM) 4-P 4 M31 load check • Check code: 85 • Multi code: 1, 2, 3, 4 PFTDB CN28-14 to 17 8-P 5 M32 load check • Check code: 85 • Multi code: 5, 6, 7, 8 PFTDB CN28-10 to 13 7-P 6 PFTDB F10 conduction check – – 7 Replace PFTDB. – – 8 Replace MFPB.

Code: 93-10
Description: Misfeed at duplex transport section.
93-10 The ADU paper passage sensor/2 (PS48) is not turned ON (unblocked) even after the set period of time has elapsed after the ADU paper passage sensor/1 (PS47) turns ON (block) by the paper.
– Paper jam of a sheet of paper left at the duplex transport section results, if the ADU paper passage sensor/1 (PS47) is turned ON (blocked) or the ADU paper passage sensor/2 (PS48) is turned ON (unblocked) when the main power switch is turned ON, a door is opened and closed, or a misfeed or malfunction is reset.
– When the main power switch is turned ON, residual paper detection starts between each sensor. Paper jam of a sheet of paper left at the duplex transport section results, if the ADU paper passage sensor/1 (PS47) is turned from OFF (unblocked) to ON (blocked).
– When the main power switch is turned ON, residual paper detection starts between each sensor. Paper jam of a sheet of paper left at the duplex transport section results, if the ADU paper passage sensor/2 (PS48) is turned from OFF (blocked) to ON (unblocked).
Causes: • ADU transport motor/1 (M31) • ADU transport motor/2 (M32) • ADU paper passage sensor/1 (PS47) • ADU paper passage sensor/2 (PS48) • Paper feed/transport drive board (PFTDB) • MFP board (MFPB)
Troubleshooting Guides: 1 Initial check items – – 2 PS47 I/O check, sensor check PFTDB CN28-3 (ON) 6-P 3 PS48 I/O check, sensor check PFTDB CN28-6 (ON) 7-P 4 M31 load check • Check code: 85 • Multi code: 1, 2, 3, 4 PFTDB CN28-14 to 17 8-P 5 M32 load check • Check code: 85 • Multi code: 5, 6, 7, 8 PFTDB CN28-10 to 13 7-P 6 PFTDB F10 conduction check – – 7 Replace PFTDB. – – 8 Replace MFPB.

Code: 99-01
Description: Controller JAM (paper size error)
• As a result of a paper size error, the controller transmits a forced stop command to the printer engine and the printer engine is internally processing the size error. • As a result of a paper size error, the controller transmits a forced stop command to the printer engine; but the paper causing the size error cannot be fed out.
Causes:
Troubleshooting Guides: 1 Initial check items – – 2 Open and close the lower front door of the main body.

Code: 99-02
Description: Controller JAM (controller forced stop command)
The controller transmits a forced stop command under a condition other than a paper size error during a print cycle.
Causes:
Troubleshooting Guides: 1 Initial check items – – 2 Open and close the lower front door of the main body.

Code: 99-03
Description: Controller JAM (image processing)
Image stabilization not completing a job.
Causes:
Troubleshooting Guides: 1 Initial check items – – 2 Open and close the lower front door of the main body.

Code: 99-04
Description: Controller JAM (a job reservation in the main body is not released)
A job reservation is not released after a lapse of a given time after that a print start command has been received.
Causes:
Troubleshooting Guides: 1 Initial check items – – 2 Open and close the lower front door of the main body.

Code: 99-05
Description: Controller JAM (main body not starting a job)
A waiting status is not released even with a print start command received.
Causes:
Troubleshooting Guides: 1 Initial check items – – 2 Open and close the lower front door of the main body.

Code: 99-06
Description: Controller JAM (print control on the main body is not completed)
Print control is not completed even after a job has been completed.
Causes:
Troubleshooting Guides: 1 Initial check items – – 2 Open and close the lower front door of the main body.

Code: 99-07
Description: Controller JAM (main body not completing a job)
The engine does not stop after a lapse of a given time after that a print has finished.
Causes:
Troubleshooting Guides: 1 Initial check items – – 2 Open and close the lower front door of the main body.

Code: 99-08
Description: Controller JAM (finisher not starting a job)
The finisher does not accept a print start command.
Causes:
Troubleshooting Guides: 1 Initial check items – – 2 Open and close the lower front door of the main body. Or, open and close the front door of the finisher.

Code: 99-09
Description: Controller JAM (finisher not completing a job)
• A paper exit or paper finishing process inside the finisher is not completed. • The finisher does not start during a reset procedure from the jam.
Causes:
Troubleshooting Guides: 1 Initial check items – – 2 Open and close the lower front door of the main body. Or, open and close the front door of the finisher.

Code: C0002
Description: Paper feed communication error. When the paper feed/transport drive board (PFTDB) is receiving data, a communication error is detected.
Causes: • Paper feed/transport drive board (PFTDB) • MFP board (MFPB)
Troubleshooting Guides: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Correct the harness connection between MFPB CN2E-PFTDB CN4 if faulty. 3. Rewrite the firmware. 4. PFTDB F3 conduction check 5. Replace PFTDB. 6. MFPB F2E conduction check 7. Replace MFPB.

Code: C0104, C0105
Description: • C0104: Tray 3/4 feeder transportation motor failure to turn • C0105: Tray 3/4 feeder transportation motor turning at abnormal timing
• C0104: The motor lock signal remains HIGH for a predetermined continuous period of time while the motor is turning. • C0105: The motor lock signal remains LOW for a predetermined continuous period of time while the motor remains stationary.
Causes: • LCC transport motor (M25) • Paper feed/transport drive board (PFTDB)
Troubleshooting Guides: 1. Check the connector between M25-PFTDB CN13 for proper connection and correct as necessary. 2. Check the connector of M25 for proper drive coupling and correct as necessary. 3. M25 load check • Check code: 28 • Multi code: 25, 26, 27, 28 • Control signal: PFTDB CN13-1 (DC24V), PFTDB CN13-4 (START/STOP) • Location of electrical component: 11-X 4. Replace M25. 5. PFTDB F15 conduction check 6. Replace PFTDB.

Code: C0202
Description: Tray 1 feeder up/down abnormality. The tray 1 upper limit sensor (PS6) is not turned ON (blocked) even after the set period of time has elapsed after the paper lift-up operation for the drawer began.
Causes: • Tray 1 upper limit sensor (PS6) • Tray 1 lift-up motor (M6) • Paper feed/transport drive board (PFTDB)
Troubleshooting Guides: 1. Remove the tray and check to see if a piece of paper is not left inside the machine. 2. Check the connector between M6-PFTDB CN25 for proper connection and correct as necessary. 3. Check the connector of M6 for proper drive coupling and correct as necessary. 4. Check the connector between PS6-relay CN145-PFTDB CN14 for proper connection and correct as necessary. 5. PS6 I/O check, sensor check • Control signal: PFTDB CN14-3 (ON) • Location of electrical component: 1-P 6. M6 load check • Check code: 23 • Multi code: 4 • Control signal: PFTDB CN25-10 to 11 • Location of electrical component: 2-X 7. Replace M6. 8. PFTDB F10 conduction check 9. Replace PFTDB.

Code: C0204
Description: Tray 2 feeder up/down abnormality. The tray 2 upper limit sensor (PS14) is not turned ON (blocked) even after the set period of time has elapsed after the paper lift-up operation for the drawer began.
Causes: • Tray 2 upper limit sensor (PS14) • Tray 2 lift-up motor (M8) • Paper feed/transport drive board (PFTDB)
Troubleshooting Guides: 1. Remove the tray and check to see if a piece of paper is not left inside the machine. 2. Check the connector between M8-PFTDB CN24 for proper connection and correct as necessary. 3. Check the connector of M8 for proper drive coupling and correct as necessary. 4. Check the connector between PS14-relay CN155B-PFTDB CN12 for proper connection and correct as necessary. 5. PS14 I/O check, sensor check • Control signal: PFTDB CN12-17 (ON) • Location of electrical component: 4-P 6. M8 load check • Check code: 23 • Multi code: 5 • Control signal: PFTDB CN24-10 to 11 • Location of electrical component: 4-X 7. Replace M8. 8. PFTDB F10 conduction check 9. Replace PFTDB.

Code: C0206
Description: Tray 3 feeder up/down abnormality. The tray 3 upper limit sensor (PS22) is not turned ON (blocked) even after the set period of time has elapsed after the paper lift-up operation for the drawer began.
Causes: • Tray 3 upper limit sensor (PS22) • Tray 3 lift-up motor (M23) • Paper feed/transport drive board (PFTDB)
Troubleshooting Guides: 1. Remove the tray and check to see if a piece of paper is not left inside the machine. 2. Check the connector between M23-PFTDB CN15 for proper connection and correct as necessary. 3. Check the connector of M23 for proper drive coupling and correct as necessary. 4. Check the connector between PS22-relay CN193-relay CN113B-PFTDB CN17 for proper connection and correct as necessary. 5. PS22 I/O check, sensor check • Control signal: PFTDB CN17-6 (ON) • Location of electrical component: 6-X 6. M23 load check • Check code: 23 • Multi code: 6 • Control signal: PFTDB CN15-3 to 4 • Location of electrical component: 9-X 7. Replace M23. 8. PFTDB F12 conduction check 9. Replace PFTDB.

Code: C0208
Description: Tray 4 feeder up/down abnormality. The tray 4 upper limit sensor (PS27) is not turned ON (blocked) even after the set period of time has elapsed after the paper lift-up operation for the drawer began.
Causes: • Tray 4 upper limit sensor (PS27) • Tray 4 lift-up motor (M24) • Paper feed/transport drive board (PFTDB)
Troubleshooting Guides: 1. Remove the tray and check to see if a piece of paper is not left inside the machine. 2. Check the connector between M24-PFTDB CN15 for proper connection and correct as necessary. 3. Check the connector of M24 for proper drive coupling and correct as necessary. 4. Check the connector between PS27-relay CN194-relay CN121B-PFTDB CN19 for proper connection and correct as necessary. 5. PS27 I/O check, sensor check • Control signal: PFTDB CN19-6 (ON) • Location of electrical component: 8-X 6. M24 load check • Check code: 23 • Multi code: 7 • Control signal: PFTDB CN15-1 to 2 • Location of electrical component: 9-X 7. Replace M24. 8. PFTDB F12 conduction check 9. Replace PFTDB.

Code: C0211
Description: Manual feed up/down abnormality. • The bypass upper limit sensor (PS35) is not turned ON (blocked) even after the bypass lift-up motor (M28) rotates for a given period of time after the position is switched from stand by position at lift-up plate to the feed position. • The bypass lower limit sensor (PS36) is not turned ON (blocked) even after the bypass lift-up motor (M28) rotates for a given period of time after the position is switched from stand by position at lift-up plate to the feed position.
Causes: • Bypass lift-up motor (M28) • Bypass upper limit sensor (PS35) • Bypass lower limit sensor (PS36) • Paper feed/transport drive board (PFTDB)
Troubleshooting Guides: 1. Check the connector between M28-relay CN195B-PFTDB CN9 for proper connection and correct as necessary. 2. Check the connector of M28 for proper drive coupling and correct as necessary. 3. Check the connector between PS35-relay CN195B-PFTDB CN9 for proper connection and correct as necessary. 4. Check the connector between PS36-relay CN180-relay CN195A-PFTDB CN3 for proper connection and correct as necessary. 5. PS35 I/O check, sensor check • Control signal: PFTDB CN9-12 (ON) • Location of electrical component: 13-P 6. PS36 operation check • Control signal: PFTDB CN3-13 (ON) • Location of electrical component: 11-P 7. M28 load check • Check code: 23 • Multi code: 1, 2 • Control signal: PFTDB CN9-1 to 2 • Location of electrical component: 12-P 8. Replace M28. 9. PFTDB F17 conduction check 10. Replace PFTDB.

Code: C0216
Description: External LCT up/down abnormality (When LU-205 or LU-303 is installed). The LU upper limit sensor (PS2) is not turned ON (blocked) even after the set period of time has elapsed after the paper lift-up operation for the drawer began.
Causes: • LU upper limit sensor (PS2) • LU lift-up motor (M1) • LU drive board (LUDB) • Paper feed/transport drive board (PFTDB)
Troubleshooting Guides: 1. Check the connector between M1-LUDB CN3 for proper connection and correct as necessary. 2. Check the connector of M1 for proper drive coupling and correct as necessary. 3. Check the connector between PS2-relay CN406-LUDB CN5 for proper connection and correct as necessary. 4. PS2 I/O check, sensor check • Control signal: LUDB CN5-3 (ON) • Location of electrical component: LU-205/LU-303 4-G 5. M1 load check • Check code: 23 • Multi code: 8 • Control signal: LUDB CN3-4 (ON) • Location of electrical component: LU-205/LU-303 3-G 6. Replace M1. 7. Replace LUDB. (LU-205/LU-303) 8. PFTDB F4, F15 conduction check 9. Replace PFTDB.

Code: C0301
Description: Suction fan failure to turn. The fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning.
Causes: • Suction fan (FM1) • Paper feed/transport drive board (PFTDB)
Troubleshooting Guides: 1. Check the connector between FM1-relay CN278-relay CN300-relay CN271B-PFTDB CN8 for proper connection and correct as necessary. 2. Check the fan for possible overload and correct as necessary. 3. FM1 load check • Check code: 42 • Multi code: 2 • Control signal: PFTDB CN8-3 (REM), PFTDB CN8-5 (LOCK) • Location of electrical component: 6-P 4. Replace FM1. 5. PFTDB F2 conduction check 6. Replace PFTDB.

Code: C0351
Description: Paper cooling fan/in failure to turn. The fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning.
Causes: • Paper cooling fan/in (FM12) • Process drive board (PDB)
Troubleshooting Guides: 1. Check the connector between FM12-relay CN325-PDB CN10 for proper connection and correct as necessary. 2. Check the fan for possible overload and correct as necessary. 3. FM12 load check • Check code: 42 • Multi code: 18, 19 • Control signal: PDB CN10-1 (DRIVE), PDB CN10-3 (LOCK) • Location of electrical component: 18-X 4. Replace FM12. 5. PDB F4 conduction check 6. Replace PDB.

Code: C1003, C1013
Description: • C1003: PK communication error (Finisher detection) • C1013: PK communication error (PK detection)
<When FS-537+PK-523 or FS-537SD+PK-523 is installed> When a communication error is detected between the FS control board (FSCB) and the punch control board (PKCB).
Causes: • Punch control board (PKCB) • FS control board (FSCB)
Troubleshooting Guides: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Rewrite the firmware. 3. Replace PKCB. 4. Replace FSCB.

Code: C1004, C1014
Description: • C1004: Finisher communication error (Engine detection) • C1014: Finisher communication error (Finisher detection)
<When FS-536, FS-536SD, FS-537, or FS-537SD is installed> When a communication error is detected between the MFP board (MFPB) and the FS control board (FSCB).
Causes: • FS control board (FSCB) • MFP board (MFPB)
Troubleshooting Guides: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Rewrite the firmware. 3. Replace FSCB. (FS-536/FS-536SD/FS-537/FS-537SD) 4. PKCB ICP1 conduction check. 5. PIDB ICP1 conduction check. 6. Replace MFPB.

Code: C1007, C1017
Description: • C1007: PI communication error (Finisher detection) • C1017: PI communication error (PI detection
)<When FS-537+PI-507 or FS-537SD+PI-507 is installed> When a communication error is detected between the FS control board (FSCB) and the PI drive board (PIDB).
Causes: • PI drive board (PIDB) • FS control board (FSCB)
Troubleshooting Guides: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Rewrite the firmware. 3. Replace PIDB. 4. Replace FSCB.

Code: C1081, C1082
Description: • C1081: SD communication error (Finisher detection) • C1082: SD communication error (SD detection)
<When FS-536SD or FS-537SD is installed> When a communication error is detected between the FS control board (FSCB) and the SD control board (SDCB).
Causes: • SD control board (SDCB) • FS control board (FSCB)
Troubleshooting Guides: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Rewrite the firmware. 3. Replace SDCB. (FS-536/FS-536SD/FS-537/FS-537SD) 4. Replace FSCB. (FS-536/FS-536SD/FS-537/FS-537SD)

Code: C1102
Description: Main tray up/down motor drive malfunction.
<When FS-536 or FS-536SD is installed> • While the exit tray is being lifted, the main tray upper position sensor (PS26/PS27) is not turned ON (blocked) and the main tray upper position detect switch (SW2) is not turned ON, even after the main tray up/down motor (M11) turns by the set number of times. • While the exit tray is being lowered, the main tray full detection sensor (PS29) is not turned ON (blocked) after the set period of time has elapsed after the main tray up/down motor (M11) is turned ON.
<When FS-537 or FS-537SD is installed> • The main tray lift up detection sensor (PS16/PS17) is not turned ON after the set period of time has elapsed after the main tray up/down motor (M6) is turned ON. • The main tray full detection sensor (PS12) is not turned ON (unblocked) after the set period of time has elapsed after the main tray up/down motor (M6) is turned ON.
Causes: <When FS-536 or FS-536SD is installed> • Main tray up/down motor (M11) • Main tray upper position sensor/R (PS26) • Main tray upper position sensor/F (PS27) • Main tray full detection sensor (PS29) • Main tray upper position detect switch (SW2) • FS control board (FSCB)
<When FS-537 or FS-537SD is installed> • Main tray up/down motor (M6) • Main tray lift up detection sensor/F (PS16) • Main tray lift up detection sensor/R (PS17) • Main tray full detection sensor (PS12) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536 or FS-536SD is installed 1. Check the connector between M11-FSCB J9 for proper connection and correct as necessary. 2. Check the connector of M11 for proper drive coupling, and correct as necessary. 3. Check the connector between PS26-relay CN1-FSCB J14 for proper connection and correct as necessary. 4. Check the connector between PS27-relay CN1-FSCB J14 for proper connection and correct as necessary. 5. Check the connector between PS29-relay CN2-FSCB J14 for proper connection and correct as necessary. 6. Check the connector between SW2-FSCB J10 for proper connection and correct as necessary. 7. PS26 I/O check, sensor check • Control signal: FSCB J14<A>-5 (ON) • Location of electrical component: FS-536/FS-536SD 2-C 8. PS27 I/O check, sensor check • Control signal: FSCB J14-6 (ON) • Location of electrical component: FS-536/FS-536SD 3-C 9. PS29 I/O check, sensor check • Control signal: FSCB J14<A>-8 (ON) • Location of electrical component: FS-536/FS-536SD 4-C 10. SW2 operation check • Control signal: FSCB J10-1 to 2 • Location of electrical component: FS-536/FS-536SD 15-K 11. M11 operation check • Control signal: FSCB J9<A>-9 to 10 • Location of electrical component: FS-536/FS-536SD 12-C 12. Replace M11. 13. FSCB F2 conduction check 14. Replace FSCB.
(b) When FS-537 or FS-537SD is installed 1. Check the connector between M6-FSCB J23 for proper connection and correct as necessary. 2. Check the connector of M6 for proper drive coupling and correct as necessary. 3. Check the connector between PS16-relay CN10-FSCB J20 for proper connection and correct as necessary. 4. Check the connector between PS17-relay CN10-FSCB J20 for proper connection and correct as necessary. 5. Check the connector between PS12-relay CN9-FSCB J19 for proper connection and correct as necessary. 6. PS16 I/O check, sensor check • Control signal: FSCB J20-4 (ON) • Location of electrical component: FS-537/FS-537SD 11 to 12-D 7. PS17 I/O check, sensor check • Control signal: FSCB J20-7 (ON) • Location of electrical component: FS-537/FS-537SD 12-D 8. PS12 I/O check, sensor check • Control signal: FSCB J19-7 (ON) • Location of electrical component: FS-537/FS-537SD 10-D 9. M6 operation check • Control signal: FSCB J23-1 to 11 • Location of electrical component: FS-537/FS-537SD 13-D 10. Replace M6. 11. FSCB F3 conduction check 12. Replace FSCB.

Code: C1103
Description: Alignment motor/front drive malfunction.
<When FS-536 or FS-536SD is installed> • The alignment plate/F home sensor (PS12) is not turned OFF (unblocked) after the set period of time has elapsed after the plate drive starts from the home position. • The alignment plate/F home sensor (PS12) is not turned ON (blocked) after the set period of time has elapsed after the alignment motor/front (M7) is turned ON to return the plate to the home position. • The alignment plate/F does not reach the specified position within the set period of time.
<When FS-537 or FS-537SD is installed> • The alignment plate/F home sensor (PS9) is not turned OFF (unblocked) after the set period of time has elapsed after the plate drive starts from the home position. • The alignment plate/F home sensor (PS9) is not turned ON (blocked) after the set period of time has elapsed after the alignment motor/front (M14) is turned ON to return the plate to the home position. • The alignment plate/F does not reach the specified position within the set period of time.
Causes: <When FS-536 or FS-536SD is installed> • Alignment motor/front (M7) • Alignment plate/F home sensor (PS12) • FS control board (FSCB)
<When FS-537 or FS-537SD is installed> • Alignment motor/front (M14) • Alignment plate/F home sensor (PS9) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536 or FS-536SD is installed 1. Check the connector between M7-FSCB J4 for proper connection and correct as necessary. 2. Check the connector of M7 for proper drive coupling and correct as necessary. 3. Check the connector between PS12-FSCB J4 for proper connection and correct as necessary. 4. PS12 I/O check, sensor check • Control signal: FSCB J4-4 (ON) • Location of electrical component: FS-536/FS-536SD 15-C 5. M7 operation check • Control signal: FSCB J4<A>-5 to 8 • Location of electrical component: FS-536/FS-536SD 14-C 6. Replace M7. 7. Replace FSCB.
(b) When FS-537 or FS-537SD is installed 1. Check the connector between M14-relay CN5-FSCB J18 for proper connection and correct as necessary. 2. Check the connector of M14 for proper drive coupling and correct as necessary. 3. Check the connector between PS9-relay CN5-FSCB J18 for proper connection and correct as necessary. 4. PS9 I/O check, sensor check • Control signal: FSCB J18-10 (ON) • Location of electrical component: FS-537/FS-537SD 6-D 5. M14 operation check • Control signal: FSCB J18-1 to 4 • Location of electrical component: FS-537/FS-537SD 6-D 6. Replace M14. 7. Replace FSCB.

Code: C1104
Description: Stacker plate drive motor malfunction.
<When FS-537 or FS-537SD is installed> The stacker plate home sensor (PS30) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the stacker plate drive motor (M3) is turned ON.
Causes: • Stacker plate drive motor (M3) • Stacker plate home sensor (PS30) • FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M3-relay CN1-FSCB J22 for proper connection and correct as necessary. 2. Check the connector of M3 for proper drive coupling and correct as necessary. 3. Check the connector between PS30-relay CN2-relay CN1-FSCB J22 for proper connection, and correct as necessary. 4. PS30 I/O check, sensor check • Control signal: FSCB J22-10 (ON) • Location of electrical component: FS-537/FS-537SD 3-D 5. M3 operation check • Control signal: FSCB J22-1 to 2 • Location of electrical component: FS-537/FS-537SD 2-D 6. Replace M3. 7. Replace FSCB.

Code: C1105
Description: Bundle eject motor drive malfunction.
<When FS-536 or FS-536SD is installed> • The gripper home position sensor (PS18) is not turned ON (unblocked) even after the set period of time has elapsed after the gripper position detection sensor (PS19) turns OFF (block). • The gripper position detection sensor (PS19) is not turned OFF (blocked) even after the set period of time has elapsed after PS19 turns ON (unblock). • The gripper position detection sensor (PS19) is not turned ON (unblocked) even after the set period of time has elapsed after the gripper home position sensor (PS18) turns OFF (block). • The gripper home position sensor (PS18) is not turned OFF (blocked) even after the set period of time has elapsed after the bundle eject motor (M10) is energized. • The gripper home position sensor (PS18) and the gripper position detection sensor (PS19) is turned ON (unblocked) at the same time.
<When FS-537 or FS-537SD is installed> The gripper home position sensor (PS3) is not turned OFF (blocked) or ON (unblocked) even after the set period of time has elapsed after the bundle eject motor (M1) is turned ON.
Causes: <When FS-536 or FS-536SD is installed> • Bundle eject motor (M10) • Gripper home position sensor (PS18) • Gripper position detection sensor (PS19) • FS control board (FSCB)
<When FS-537 or FS-537SD is installed> • Bundle eject motor (M1) • Gripper home position sensor (PS3) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536 or FS-536SD is installed 1. Check the connector between M10-relay CN7<A>-FSCB J13 for proper connection, and correct as necessary. 2. Check the connector of M10 for proper drive coupling, and correct as necessary. 3. Check the connector between PS18-relay CN7<A>-FSCB J13 for proper connection, and correct as necessary. 4. Check the connector between PS19-relay CN7-FSCB J12 for proper connection and correct as necessary. 5. PS18 I/O check, sensor check • Control signal: FSCB J13-13 (ON) • Location of electrical component: FS-536/FS-536SD 8-C 6. PS19 I/O check, sensor check • Control signal: FSCB J12-3 (ON) • Location of electrical component: FS-536/FS-536SD 7-C 7. M10 operation check • Control signal: FSCB J13-1 to 2 • Location of electrical component: FS-536/FS-536SD 9-C 8. Replace M10. 9. Replace FSCB.
(b) When FS-537 or FS-537SD is installed 1. Check the connector between M1-relay CN1<A>-FSCB J22 for proper connection and correct as necessary. 2. Check the connector of M1 for proper drive coupling and correct as necessary. 3. Check the connector between PS3-relay CN1<A>-FSCB J22 for proper connection and correct as necessary. 4. PS3 I/O check, sensor check • Control signal: FSCB J22<A>-13 (ON) • Location of electrical component: FS-537/FS-537SD 2-D 5. M1 operation check • Control signal: FSCB J22<A>-1 to 2 • Location of electrical component: FS-537/FS-537SD 1-D 6. Replace M1. 7. Replace FSCB.

Code: C1106
Description: Stapler movement motor malfunction.
<When FS-536 or FS-536SD is installed> • The stapler home position sensor (rear) (PS23) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the side stapler movement motor (M13) turned ON. • The stapler does not reach the specified position within the set period of time.
<When FS-537 or FS-537SD is installed> • The stapler home position sensor (PS18/PS19) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the stapler movement motor (M19) turned ON. • The stapler does not reach the specified position within the set period of time.
Causes: <When FS-536 or FS-536SD is installed> • Side stapler movement motor (M13) • Stapler home position sensor (rear) (PS23) • FS control board (FSCB)
<When FS-537 or FS-537SD is installed> • Stapler movement motor (M19) • Stapler home position sensor (corner) (PS18) • Stapler home position sensor (rear) (PS19) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536 or FS-536SD is installed 1. Check the connector between M13-relay CN3-FSCB J11 for proper connection and correct as necessary. 2. Check the connector of M13 for proper drive coupling and correct as necessary. 3. Check the connector between PS23-relay CN3-FSCB J11 for proper connection and correct as necessary. 4. PS23 I/O check, sensor check • Control signal: FSCB J11-3 (ON) • Location of electrical component: FS-536/FS-536SD 4-C 5. M13 operation check • Control signal: FSCB J11<A>-1 to 4 • Location of electrical component: FS-536/FS-536SD 4-C 6. Replace M13. 7. Replace FSCB.
(b) When FS-537 or FS-537SD is installed 1. Check the connector between M19-FSCB J17 for proper connection and correct as necessary. 2. Check the connector of M19 for proper drive coupling and correct as necessary. 3. Check the connector between PS18-FSCB J16 for proper connection and correct as necessary. 4. Check the connector between PS19-FSCB J16 for proper connection and correct as necessary. 5. PS18 I/O check, sensor check • Control signal: FSCB J16-9 (ON) • Location of electrical component: FS-537/FS-537SD 15-D 6. PS19 I/O check, sensor check • Control signal: FSCB J16-6 (ON) • Location of electrical component: FS-537/FS-537SD 15-D 7. M19 operation check • Control signal: FSCB J17-10 to 13 • Location of electrical component: FS-537/FS-537SD 14-D 8. Replace M19. 9. Replace FSCB.

Code: C1109
Description: Stapler motor drive malfunction.
<When FS-536 or FS-536SD is installed> • The stapler home position sensor (rear) (PS23) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the stapler motor (M14) turned ON. • The stapler position sensor (center) (PS24) is turned ON (blocked), when the stapler motor (M14) is running.
<When FS-537 or FS-537SD is installed> • The stapler home position sensor (PS18/PS19) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the stapler motor (M5) turned ON. • The stapler position sensor (center) (PS20) is turned ON (blocked), when the stapler motor (M5) is running.
Causes: <When FS-536 or FS-536SD is installed> • Stapler unit • Stapler home position sensor (rear) (PS23) • Stapler position sensor (center) (PS24) • FS control board (FSCB)
<When FS-537 or FS-537SD is installed> • Stapler unit • Stapler home position sensor (corner) (PS18) • Stapler home position sensor (rear) (PS19) • Stapler position sensor (center) (PS20) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536 or FS-536SD is installed 1. Check the connector between the stapler unit-relay CN4-FSCB J11 for proper connection and correct as necessary. 2. Check the connector of the stapler unit for proper drive coupling and correct as necessary. 3. Check the connector between PS23-relay CN3-FSCB J11 for proper connection and correct as necessary. 4. Check the connector between PS24-relay CN3-FSCB J11 for proper connection and correct as necessary. 5. PS23 I/O check, sensor check • Control signal: FSCB J11-3 (ON) • Location of electrical component: FS-536/FS-536SD 4-C 6. PS24 I/O check, sensor check • Control signal: FSCB J11-6 • Location of electrical component: FS-536/FS-536SD 5-C 7. Replace the stapler unit. 8. Replace FSCB.
(b) When FS-537 or FS-537SD is installed 1. Check the connector between the stapler unit-FSCB J17 for proper connection and correct as necessary. 2. Check the connector of the stapler unit for proper drive coupling and correct as necessary. 3. Check the connector between PS18-FSCB J16 for proper connection and correct as necessary. 4. Check the connector between PS19-FSCB J16 for proper connection and correct as necessary. 5. Check the connector between PS20-FSCB J16 for proper connection and correct as necessary. 6. PS18 I/O check, sensor check • Control signal: FSCB J16-9 • Location of electrical component: FS-537/FS-537SD 15-D 7. PS19 I/O check, sensor check • Control signal: FSCB J16-6 • Location of electrical component: FS-537/FS-537SD 15-D 8. PS20 I/O check, sensor check • Control signal: FSCB J16-3 • Location of electrical component: FS-537/FS-537SD 15-D 9. Replace the stapler unit. 10. Replace FSCB.

Code: C1112
Description: Stapler motor malfunction. <When FS-536SD or FS-537SD is installed> • The stapler home sensor is not turned ON even after the set period of time has elapsed while the stapler motor is energized. • The stapler home sensor is not turned OFF even after the set period of time has elapsed after the stapler home sensor is turned ON.
Causes: <When FS-536SD or FS-537SD is installed> • Staple unit • SD control board (SDCB) • FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between the staple unit-SDCB J4 for proper connection and correct as necessary. 2. Check the connector of the staple unit for proper drive coupling and correct as necessary. 3. Replace the staple unit. (FS-536SD/FS-537SD) 4. Replace SDCB. (FS-536SD/FS-537SD) 5. Replace FSCB. (FS-536SD/FS-537SD)

Code: C1113
Description: Stopper drive motor malfunction. <When FS-536SD or FS-537SD is installed> The stopper home sensor (PS6) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the stopper drive motor (M4) is turned ON.
Causes: <When FS-536SD or FS-537SD is installed> • Stopper drive motor (M4) • Stopper home sensor (PS6) • SD control board (SDCB) • FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M4-SDCB J10 for proper connection and correct as necessary. 2. Check the connector of M4 for proper drive coupling and correct as necessary. 3. Check the connector between PS6-SDCB J10 for proper connection and correct as necessary. 4. PS6 I/O check, sensor check • Control signal: SDCB J10-5 (ON) • Location of electrical component: FS-536/FS-536SD 2-P, FS-537/FS-537SD 2-P 5. M4 operation check • Control signal: SDCB J10-6 to 9 • Location of electrical component: FS-536/FS-536SD 2-P, FS-537/FS-537SD 1-P 6. Replace M4. (FS-536SD/FS-537SD) 7. Replace SDCB. (FS-536SD/FS-537SD) 8. Replace FSCB. (FS-536SD/FS-537SD)

Code: C1114
Description: Alignment motor malfunction. <When FS-536SD or FS-537SD is installed> The alignment home sensor (PS4) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the alignment motor (M3) is turned ON.
Causes: <When FS-536SD or FS-537SD is installed> • Alignment motor (M3) • Alignment home sensor (PS4) • SD control board (SDCB) • FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M3-relay CN26 (FS-536SD), CN29 (FS-537SD)-SDCB J7 for proper connection and correct as necessary. 2. Check the connector of M3 for proper drive coupling and correct as necessary. 3. Check the connector between PS4-relay CN26 (FS-536SD), CN29 (FS-537SD)-SDCB J7 for proper connection and correct as necessary. 4. PS4 I/O check, sensor check • Control signal: SDCB J7-6 (ON) • Location of electrical component: FS-536/FS-536SD 6-P, FS-537/FS-537SD 5-P 5. M3 operation check • Control signal: SDCB J7-7 to 10 • Location of electrical component: FS-536/FS-536SD 6-P, FS-537/FS-537SD 5-P 6. Replace M3. (FS-536SD/FS-537SD) 7. Replace SDCB. (FS-536SD/FS-537SD) 8. Replace FSCB. (FS-536SD/FS-537SD)

Code: C1115
Description: Center fold knife motor malfunction. <When FS-536SD or FS-537SD is installed> The center fold knife home sensor (PS8) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the center fold knife motor (M9) is turned ON.
Causes: <When FS-536SD or FS-537SD is installed> • Center fold knife motor (M9) • Center fold knife home sensor (PS8) • SD control board (SDCB) • FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M9-SDCB J11 for proper connection and correct as necessary. 2. Check the connector of M9 for proper drive coupling and correct as necessary. 3. Check the connector between PS8-relay CN26 (FS-536SD), CN29 (FS-537SD)-SDCB J7 for proper connection and correct as necessary. 4. PS8 I/O check, sensor check • Control signal: SDCB J7-3 (ON) • Location of electrical component: FS-536/FS-536SD 7-P, FS-537/FS-537SD 6-P 5. M9 operation check • Control signal: SDCB J11-11 to 20 • Location of electrical component: FS-536/FS-536SD 2-L, FS-537/FS-537SD 1-K 6. Replace M9. (FS-536SD/FS-537SD) 7. Replace SDCB. (FS-536SD/FS-537SD) 8. Replace FSCB. (FS-536SD/FS-537SD)

Code: C1124
Description: Tray lift motor /Lw drive malfunction. <FS-537+PI-507, FS-537SD +PI-507 is installed> The tray upper limit sensor /Lw (PS209) or tray lower limit sensor /Lw (PS210) is not turned ON (blocked) after the set period of time has elapsed after the tray lift motor /Lw (M202) is turned ON.
Causes: • Tray lift motor /Lw (M202) • Tray upper limit sensor /Lw (PS209) • Tray lower limit sensor /Lw (PS210) • PI drive board (PIDB) • FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M202-relay CN206-PIDB CN56 for proper connection and correct as necessary. 2. Check the connector of M202 for proper drive coupling and correct as necessary. 3. Check the connector between PS209-relay CN237-PIDB CN53 for proper connection and correct as necessary. 4. Check the connector between PS210-relay CN236-PIDB CN53 for proper connection and correct as necessary. 5. PS209 I/O check, sensor check • Control signal: PIDB CN53<A>-8 (ON) • Location of electrical component: PI-507 10-C 6. PS210 I/O check, sensor check • Control signal: PIDB CN53<A>-11 (ON) • Location of electrical component: PI-507 11-C 7. M202 operation check • Control signal: PIDB CN56-5 to 6 • Location of electrical component: PI-507 9-C 8. Replace M202. 9. Replace PIDB. 10. Replace FSCB.

Code: C1125
Description: Tray lift motor /Up drive malfunction. <FS-537+PI-507, FS-537SD +PI-507 is installed> The tray upper limit sensor /Up (PS205) or tray lower limit sensor /Up (PS204) is not turned ON (blocked) after the set period of time has elapsed after the tray lift motor /Up (M201) is turned ON.
Causes: • Tray lift motor /Up (M201) • Tray upper limit sensor /Up (PS204) • Tray lower limit sensor /Up (PS205) • PI drive board (PIDB) • FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M201-relay CN203-PIDB CN54 for proper connection and correct as necessary. 2. Check the connector of M201 for proper drive coupling and correct as necessary. 3. Check the connector between PS204-relay CN235-PIDB CN55 for proper connection and correct as necessary. 4. Check the connector between PS205-relay CN235-PIDB CN55 for proper connection and correct as necessary. 5. PS204 I/O check, sensor check • Control signal: PIDB CN55-8 (ON) • Location of electrical component: PI-507 8-C 6. PS205 I/O check, sensor check • Control signal: PIDB CN55-7 (ON) • Location of electrical component: PI-507 8-C 7. M201 operation check • Control signal: PIDB CN54-7 to 8 • Location of electrical component: PI-507 6 to 7-C 8. Replace M201. 9. Replace PIDB. 10. Replace FSCB.

Code: C1127
Description: Punch oscillating motor drive malfunction. <When FS-537+PK-523 or FS-537SD+PK-523 is installed> The PK punch oscillating home sensor (PS303) is not turned ON (blocked) or OFF (unblocked) even after the set period of time has elapsed while the punch oscillating motor (M302) is energized.
Causes: • Punch oscillating motor (M302) • PK punch oscillating home sensor (PS303) • Punch control board (PKCB) • FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M302-relay CN342-relay CN341-PKCB CN1 for proper connection and correct as necessary. 2. Check the connector of M302 for proper drive coupling and correct as necessary. 3. Check the connector between PS303-relay CN342-relay CN341-PKCB CN37 for proper connection and correct as necessary. 4. PS303 I/O check, sensor check • Control signal: PKCB CN37-2 (ON) • Location of electrical component: PK-523 5-C 5. M302 operation check • Control signal: PKCB CN1-1 to 6 • Location of electrical component: PK-523 5-C 6. Replace M302. 7. PKCB ICP2 conduction check. 8. Replace PKCB. 9. Replace FSCB.

Code: C1130
Description: ZU transport motor malfunction. <When FS-537+ZU-609 or FS-537SD+ZU-609 is installed> The chopper home sensor (PS501) is not turned ON (blocked) even after the set period of time has elapsed after the ZU transport motor (M500) is turned ON.
Causes: • ZU transport motor (M500) • Chopper home sensor (PS501) • ZU drive board (ZUDB)
Troubleshooting Guides: 1. Check the connector between M500-ZUDB CN6 for proper connection and correct as necessary. 2. Check the connector of M500 for proper drive coupling and correct as necessary. 3. Check the connector between PS501-ZUDB CN5 for proper connection and correct as necessary. 4. PS501 I/O check, sensor check • Control signal: ZUDB CN5-9 (ON) • Location of electrical component: ZU-609 4-B 5. M500 operation check • Control signal: ZUDB CN6-1 to 6 • Location of electrical component: ZU-609 1 to 2-B 6. Replace M500. 7. Replace ZUDB.

Code: C1131
Description: Folding guide motor drive malfunction. <When FS-537+ZU-609 or FS-537SD+ZU-609 is installed> The guide home sensor (PS500) is not turned ON (blocked) even after the set period of time has elapsed after the folding guide motor (M501) is turned ON.
Causes: • Folding guide motor (M501) • Guide home sensor (PS500) • ZU drive board (ZUDB)
Troubleshooting Guides: 1. Check the connector between M501-ZUDB CN6 for proper connection and correct as necessary. 2. Check the connector of M501 for proper drive coupling and correct as necessary. 3. Check the connector between PS500-ZUDB CN5 for proper connection and correct as necessary. 4. PS500 I/O check, sensor check • Control signal: ZUDB CN5-3 (ON) • Location of electrical component: ZU-609 3-B 5. M501 operation check • Control signal: ZUDB CN6-9 to 12 • Location of electrical component: ZU-609 2-B 6. Replace M501. 7. Replace ZUDB.

Code: C1132
Description: Punch drive motor drive malfunction.
<When FS-536+PK-520 or FS-536SD+PK-520 is installed> The punch home sensor (PS1) is not turned ON (unblocked) or OFF (blocked) even after the set period of time has elapsed while the punch drive motor (M1) is energized.
<When FS-537+PK-523 or FS-537SD+PK-523 is installed> The PK punch home sensor/2 (PS301) is not turned ON (unblocked) or OFF (blocked) even after the set period of time has elapsed while the punch drive motor (M301) is energized.
Causes: <When FS-536+PK-520 or FS-536SD+PK-520 is installed> • Punch drive motor (M1) • Punch home sensor (PS1) • FS control board (FSCB)
<When FS-537+PK-523 or FS-537SD+PK-523 is installed> • Punch drive motor (M301) • PK punch home sensor/2 (PS301) • Punch control board (PKCB) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536+PK-520 or FS-536SD+PK-520 is installed 1. Check the connector between M1-relay CN351-FSCB J7 for proper connection and correct as necessary. 2. Check the connector of M1 for proper drive coupling and correct as necessary. 3. Check the connector between PS1-FSCB J7 for proper connection and correct as necessary. 4. PS1 I/O check, sensor check • Control signal: FSCB J7-5 (ON) • Location of electrical component: FS-536/FS-536SD 13-K 5. M1 operation check • Control signal: FSCB J7-7 to 8 • Location of electrical component: FS-536/FS-536SD 13-K 6. Replace M1. 7. Replace FSCB.
(b) When FS-537+PK-523 or FS-537SD+PK-523 is installed 1. Check the connector between M301-relay CN351-PKCB CN35 for proper connection and correct as necessary. 2. Check the connector of M301 for proper drive coupling and correct as necessary. 3. Check the connector between PS301-PKCB CN36 for proper connection and correct as necessary. 4. PS301 I/O check, sensor check • Control signal: PKCB CN36-5 (ON) • Location of electrical component: PK-523 3-C 5. M301 operation check • Control signal: PKCB CN35-1 to 3 • Location of electrical component: PK-523 2-C 6. Replace M301. 7. Replace PKCB. 8. Replace FSCB.

Code: C1133
Description: Pressure motor malfunction.
<When FS-537+ZU-609 or FS-537SD+ZU-609 is installed> The press home sensor (PS502) is not turned ON (unblocked), or is not turned OFF (blocked) after it is turned ON (unblocked), even after the set period of time has elapsed after the pressure motor (M502) starts searching its home position.
Causes: • Pressure motor (M502) • Press home sensor (PS502) • ZU drive board (ZUDB)
Troubleshooting Guides: 1. Check the connector between M502-ZUDB CN6 for proper connection and correct as necessary. 2. Check the connector of M502 for proper drive coupling and correct as necessary. 3. Check the connector between PS502-ZUDB CN5 for proper connection and correct as necessary. 4. PS502 I/O check, sensor check • Control signal: ZUDB CN5-6 (ON) • Location of electrical component: ZU-609 4-B 5. M502 operation check • Control signal: ZUDB CN6-7 (DRV) • Location of electrical component: ZU-609 2-B 6. Replace M502. 7. ZUDB ICP3 conduction check. 8. Replace ZUDB.

Code: C1140
Description: Alignment motor/rear malfunction.
<When FS-536 or FS-536SD is installed> The alignment plate/R home sensor (PS13) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed while the alignment motor/rear (M8) is energized.
<When FS-537 or FS-537SD is installed> The alignment plate/R home sensor (PS6) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed while the alignment motor/rear (M13) is energized.
Causes: <When FS-536 or FS-536SD is installed> • Alignment motor/rear (M8) • Alignment plate/R home sensor (PS13) • FS control board (FSCB)
<When FS-537 or FS-537SD is installed> • Alignment motor/rear (M13) • Alignment plate/R home sensor (PS6) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536 or FS-536SD is installed 1. Check the connector between M8-FSCB J12 for proper connection and correct as necessary. 2. Check the connector of M8 for proper drive coupling and correct as necessary. 3. Check the connector between PS13-FSCB J9 for proper connection and correct as necessary. 4. PS13 I/O check, sensor check • Control signal: FSCB J9-11 (ON) • Location of electrical component: FS-536/FS-536SD 10-C 5. M8 operation check • Control signal: FSCB J12-13 to 16 (ON) • Location of electrical component: FS-536/FS-536SD 6-C 6. Replace M8. 7. Replace FSCB.
(b) When FS-537 or FS-537SD is installed 1. Check the connector between M13-relay CN3-FSCB J21 for proper connection and correct as necessary. 2. Check the connector of M13 for proper drive coupling and correct as necessary. 3. Check the connector between PS6-relay CN4-relay CN3-FSCB J21 for proper connection and correct as necessary. 4. PS6 I/O check, sensor check • Control signal: FSCB J21-10 (ON) • Location of electrical component: FS-537/FS-537SD 4-D 5. M13 operation check • Control signal: FSCB J21-1 to 4 • Location of electrical component: FS-537/FS-537SD 4-D 6. Replace M13. 7. Replace FSCB.

Code: C1141
Description: FNS paddle motor malfunction.
<When FS-536 or FS-536SD is installed> The upper paddle home position detection sensor (PS14) is not turned OFF (blocked) or ON (unblocked) even after the set period of time has elapsed while the FNS paddle motor (M5) is turning.
<When FS-537 or FS-537SD is installed> The paddle home sensor (PS25) is not turned OFF (blocked) or ON (unblocked) even after the set period of time has elapsed while the FNS paddle motor (M9) is turning.
Causes: <When FS-536 or FS-536SD is installed> • FNS paddle motor (M5) • Upper paddle home position detection sensor (PS14) • FS control board (FSCB)
<When FS-537 or FS-537SD is installed> • FNS paddle motor (M9) • Paddle home sensor (PS25) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536 or FS-536SD is installed 1. Check the connector between M5-FSCB J4 for proper connection and correct as necessary. 2. Check the connector of M5 for proper drive coupling and correct as necessary. 3. Check the connector between PS14-FSCB J4 for proper connection and correct as necessary. 4. PS14 I/O check, sensor check • Control signal: FSCB J4-7 (ON) • Location of electrical component: FS-536/FS-536SD 15-C 5. M5 operation check • Control signal: FSCB J4<A>-9 to 12 • Location of electrical component: FS-536/FS-536SD 14-C 6. Replace M5. 7. Replace FSCB.
(b) When FS-537 or FS-537SD is installed 1. Check the connector between M9-relay CN13-FSCB J14 for proper connection and correct as necessary. 2. Check the connector of M9 for proper drive coupling and correct as necessary. 3. Check the connector between PS25-relay CN13-FSCB J14 for proper connection and correct as necessary. 4. PS25 I/O check, sensor check • Control signal: FSCB J14-10 (ON) • Location of electrical component: FS-537/FS-537SD 16-K to L 5. M9 operation check • Control signal: FSCB J14-4 to 7 • Location of electrical component: FS-537/FS-537SD 17-K to L 6. Replace M9. 7. Replace FSCB.

Code: C1142
Description: Paddle up/down motor drive malfunction.
<When FS-537 or FS-537SD is installed> The paddle up/down home sensor (PS27) is not turned OFF (blocked) or ON (unblocked) even after the set period of time has elapsed while the paddle up/down motor (M7) is energized.
Causes: • Paddle up/down motor (M7) • Paddle up/down home sensor (PS27) • FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M7-relay CN13<A>-FSCB J14 for proper connection and correct as necessary. 2. Check the connector of M7 for proper drive coupling and correct as necessary. 3. Check the connector between PS27-relay CN13<A>-FSCB J14 for proper connection and correct as necessary. 4. PS27 I/O check, sensor check • Control signal: FSCB J14<A>-7 (ON) • Location of electrical component: FS-537/FS-537SD 18-K to L 5. M7 operation check • Control signal: FSCB J14<A>-1 to 4 • Location of electrical component: FS-537/FS-537SD 18-K to L 6. Replace M7. 7. Replace FSCB.

Code: C1143
Description: Arm drive motor drive malfunction. <When FS-537 or FS-537SD is installed> The arm home position sensor (PS26) is not turned ON (unblocked) or OFF (blocked) even after the set period of time has elapsed while the arm drive motor (M8) is energized.
Causes: • Arm drive motor (M8) • Arm home position sensor (PS26) • FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M8-relay CN13<A>-FSCB J14 for proper connection and correct as necessary. 2. Check the connector of M8 for proper drive coupling and correct as necessary. 3. Check the connector between PS26-relay CN13-FSCB J14 for proper connection and correct as necessary. 4. PS26 I/O check, sensor check • Control signal: FSCB J14-3 (ON) • Location of electrical component: FS-537/FS-537SD 17-K to L 5. M8 operation check • Control signal: FSCB J14<A>-8 to 11 • Location of electrical component: FS-537/FS-537SD 17-K to L 6. Replace M8. 7. Replace FSCB.

Code: C1144
Description: Pre-eject drive motor drive malfunction.
<When FS-536 or FS-536SD is installed> • The pre-eject home sensor (PS21) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the preeject drive motor (M9) is turned ON. • The pre-eject away sensor (PS22) is not turned ON (blocked) or OFF (unblocked) even after the set period of time has elapsed after the preeject drive motor (M9) is turned ON.
<When FS-537 or FS-537SD is installed> The trail edge stopper home sensor (PS31) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the pre-eject drive motor (M2) is turned ON.
Causes: <When FS-536 or FS-536SD is installed> • Pre-eject drive motor (M9) • Pre-eject home sensor (PS21) • Pre-eject away sensor (PS22) • FS control board (FSCB)
<When FS-537 or FS-537SD is installed> • Pre-eject drive motor (M2) • Trail edge stopper home sensor (PS31) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536 or FS-536SD is installed 1. Check the connector between M9-relay CN7<A>-FSCB J13 for proper connection, and correct as necessary. 2. Check the connector of M9 for proper drive coupling and correct as necessary. 3. Check the connector between PS21-relay CN8-relay CN7-FSCB J12 for proper connection, and correct as necessary. 4. Check the connector between PS22-relay CN8-relay CN7-FSCB J12 for proper connection, and correct as necessary. 5. PS21 I/O check, sensor check • Control signal: FSCB J12-6 (ON) • Location of electrical component: FS-536/FS-536SD 7-C 6. PS22 I/O check, sensor check • Control signal: FSCB J12-9 (ON) • Location of electrical component: FS-536/FS-536SD 7-C 7. M9 operation check • Control signal: FSCB J13-3 to 4 • Location of electrical component: FS-536/FS-536SD 9-C 8. Replace M9. 9. Replace FSCB.
(b) When FS-537 or FS-537SD is installed 1. Check the connector between M2-relay CN1<A>-FSCB J22 for proper connection and correct as necessary. 2. Check the connector of M2 for proper drive coupling and correct as necessary. 3. Check the connector between PS31-relay CN2-relay CN1-FSCB J22 for proper connection, and correct as necessary. 4. PS31 I/O check, sensor check • Control signal: FSCB J22-13 • Location of electrical component: FS-537/FS-537SD 3-D 5. M2 operation check • Control signal: FSCB J22<A>-3 to 4 • Location of electrical component: FS-537/FS-537SD 1-D 6. Replace M2. 7. Replace FSCB.

Code: C1145
Description: Trailing edge stopper motor malfunction.
<When FS-536 or FS-536SD is installed> The trailing edge stopper home position detection sensor (PS20) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the trailing edge stopper motor (M6) is turned ON.
<When FS-537 or FS-537SD is installed> The trail edge stopper sensor/F (PS10) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the trail edge stopper motor/F (M12) is turned ON.
Causes: <When FS-536 or FS-536SD is installed> • Trailing edge stopper motor (M6) • Trailing edge stopper home position detection sensor (PS20) • FS control board (FSCB)
<When FS-537 or FS-537SD is installed> • Trail edge stopper motor/F (M12) • Trail edge stopper sensor/F (PS10) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536 or FS-536SD is installed 1. Check the connector between M6-FSCB J5 for proper connection and correct as necessary. 2. Check the connector of M6 for proper drive coupling and correct as necessary. 3. Check the connector between PS20-relay CN19-FSCB J5 for proper connection and correct as necessary. 4. PS20 I/O check, sensor check • Control signal: FSCB J5-9 (ON) • Location of electrical component: FS-536/FS-536SD 15-K 5. M6 operation check • Control signal: FSCB J5-13 to 16 • Location of electrical component: FS-536/FS-536SD 15-K 6. Replace M6. 7. Replace FSCB.
(b) When FS-537 or FS-537SD is installed 1. Check the connector between M12-relay CN5-FSCB J18 for proper connection and correct as necessary. 2. Check the connector of M12 for proper drive coupling and correct as necessary. 3. Check the connector between PS10-relay CN5-FSCB J18 for proper connection and correct as necessary. 4. PS10 I/O check, sensor check • Control signal: FSCB J18-13 (ON) • Location of electrical component: FS-537/FS-537SD 6 to 7-D 5. M12 operation check • Control signal: FSCB J18-14 to 17 • Location of electrical component: FS-537/FS-537SD 7-D 6. Replace M12. 7. Replace FSCB.

Code: C1146
Description: Trail edge stopper motor/R malfunction. <When FS-537 or FS-537SD is installed> The trail edge stopper sensor/R (PS7) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the trail edge stopper motor/R (M11) is turned ON.
Causes: <When FS-537 or FS-537SD is installed> • Trail edge stopper motor/R (M11) • Trail edge stopper sensor/R (PS7) • FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M11-relay CN4-relay CN3-FSCB J21 for proper connection and correct as necessary. 2. Check the connector of M11 for proper drive coupling, and correct as necessary. 3. Check the connector between PS7-relay CN4-relay CN3-FSCB J21 for proper connection and correct as necessary. 4. PS7 I/O check, sensor check • Control signal: FSCB J21-16 (ON) • Location of electrical component: FS-537/FS-537SD 5-D 5. M11 operation check • Control signal: FSCB J21-17 to 20 • Location of electrical component: FS-537/FS-537SD 5-D 6. Replace M11. 7. Replace FSCB.

Code: C1152
Description: Paper transport belt motor malfunction. <When FS-537SD is installed> Even after a predetermined period of time has elapsed since the paper transport belt motor (M34) starts operation, the lock signal is not set to L (turning).
Causes: • Paper transport belt motor (M34) • SD control board (SDCB) • FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M34-relay CN21-FSCB J24 for proper connection and correct as necessary. 2. Check the connector of M34 for proper drive coupling and correct as necessary. 3. M34 operation check • Control signal: FSCB J24-1 to 11 • Location of electrical component: FS-537/FS-537SD 7-M 4. Replace M34 5. Replace SDCB. 6. FSCB F4 conduction check 7. Replace FSCB.

Code: C1156
Description: SD paddle motor malfunction. <When FS-536SD or FS-537SD is installed> The paddle home sensor (PS5) is not turned OFF (blocked) or ON (unblocked) even after the set period of time has elapsed while the SD paddle motor (M7) is turning.
Causes: <When FS-536SD or FS-537SD is installed> • SD paddle motor (M7) • Paddle home sensor (PS5) • SD control board (SDCB) • FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M7-SDCB J8 for proper connection and correct as necessary. 2. Check the connector of M7 for proper drive coupling and correct as necessary. 3. Check the connector between PS5-SDCB J8 for proper connection and correct as necessary. 4. PS5 I/O check, sensor check • Control signal: SDCB J8-3 (ON) • Location of electrical component: FS-536/FS-536SD 4-P, FS-537/FS-537SD 3-P 5. M7 operation check • Control signal: SDCB J8-4 to 7 • Location of electrical component: FS-536/FS-536SD 4-P, FS-537/FS-537SD 3-P 6. Replace M7. (FS-536SD/FS-537SD) 7. Replace SDCB. (FS-536SD/FS-537SD) 8. Replace FSCB. (FS-536SD/FS-537SD)

Code: C1184
Description: Paper receiving control motor malfunction
<When FS-536 or FS-536SD is installed> The paper delivery control sensor (PS28) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed while the paper receiving control motor (M12) is energized.
<When FS-537 or FS-537SD is installed> The paper delivery control sensor (PS11) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed while the paper receiving control motor (M15) is energized.
Causes: <When FS-536 or FS-536SD is installed> • Paper receiving control motor (M12) • Paper delivery control sensor (PS28) • FS control board (FSCB)
<When FS-537 or FS-537SD is installed> • Paper receiving control motor (M15) • Paper delivery control sensor (PS11) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536 or FS-536SD is installed 1. Check the connector between M12-relay CN1-FSCB J14 for proper connection and correct as necessary. 2. Check the connector of M12 for proper drive coupling and correct as necessary. 3. Check the connector between PS28-relay CN1-FSCB J14 for proper connection and correct as necessary. 4. PS28 I/O check, sensor check • Control signal: FSCB J14-3 (ON) • Location of electrical component: FS-536/FS-536SD 2 to 3-C 5. M12 operation check • Control signal: FSCB J14<A>-9 to 12 • Location of electrical component: FS-536/FS-536SD 2-C 6. Replace M12. 7. Replace FSCB.
(b) When FS-537 or FS-537SD is installed 1. Check the connector between M15-FSCB J19 for proper connection and correct as necessary. 2. Check the connector of M15 for proper drive coupling and correct as necessary. 3. Check the connector between PS11-relay CN10<A>-FSCB J20 for proper connection and correct as necessary. 4. PS11 I/O check, sensor check • Control signal: FSCB J20<A>-3 (ON) • Location of electrical component: FS-537/FS-537SD 10-D 5. M15 operation check • Control signal: FSCB J19-1 to 4 • Location of electrical component: FS-537/FS-537SD 10-D 6. Replace M15. 7. Replace FSCB.

Code: C1195
Description: Paper discharge control motor malfunction. <When FS-536SD or FS-537SD is installed> The curl cover detection sensor (PS2) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the paper discharge control motor (M2) is turned ON.
Causes: <When FS-536SD or FS-537SD is installed> • Paper discharge control motor (M2) • Curl cover detection sensor (PS2) • SD control board (SDCB) • FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M2-relay CN22 (FS-536SD), CN25 (FS-537SD)-relay CN21 (FS-536SD), CN26 (FS-537SD)-SDCB J5 for proper connection and correct as necessary. 2. Check the connector of M2 for proper drive coupling and correct as necessary. 3. Check the connector between PS2-relay CN22 (FS-536SD), CN25 (FS-537SD)-relay CN21 (FS-536SD), CN26 (FS-537SD)-SDCB J5 for proper connection and correct as necessary. 4. PS2 I/O check, sensor check • Control signal: SDCB J5-3 (ON) • Location of electrical component: FS-536/FS-536SD 4-L, FS-537/FS-537SD 3-K 5. M2 operation check • Control signal: SDCB J5-4 to 7 • Location of electrical component: FS-536/FS-536SD 4-L, FS-537/FS-537SD 3-K 6. Replace M2. (FS-536SD/FS-537SD) 7. Replace SDCB. (FS-536SD/FS-537SD) 8. Replace FSCB. (FS-536SD/FS-537SD)

Code: C1196
Description: Center fold guide motor drive malfunction. <When FS-536SD or FS-537SD is installed> The guide home sensor (PS7) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the center fold guide motor (M6) is turned ON.
Causes: <When FS-536SD or FS-537SD is installed> • Center fold guide motor (M6) • Guide home sensor (PS7) • SD control board (SDCB) • FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M6-SDCB J9 for proper connection and correct as necessary. 2. Check the connector of M6 for proper drive coupling and correct as necessary. 3. Check the connector between PS7-SDCB J9 for proper connection and correct as necessary. 4. PS7 I/O check, sensor check • Control signal: SDCB J9-6 (ON) • Location of electrical component: FS-536/FS-536SD 5-P, FS-537/FS-537SD 4-P 5. M6 operation check • Control signal: SDCB J9-7 to 10 • Location of electrical component: FS-536/FS-536SD 4-P, FS-537/FS-537SD 4-P 6. Replace M6. (FS-536SD/FS-537SD) 7. Replace SDCB. (FS-536SD/FS-537SD) 8. Replace FSCB. (FS-536SD/FS-537SD)

Code: C1197
Description: Tri-folding guide motor drive malfunction. <When FS-536SD or FS-537SD is installed> The tri-folding gate home sensor (PS11) is not turned OFF (blocked) or ON (unblocked) even after the set period of time has elapsed while the tri-folding guide motor (M8) is energized.
Causes: <When FS-536SD or FS-537SD is installed> • Tri-folding guide motor (M8) • Tri-folding gate home sensor (PS11) • SD control board (SDCB) • FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M8-SDCB J8 for proper connection and correct as necessary. 2. Check the connector of M8 for proper drive coupling and correct as necessary. 3. Check the connector between PS11-SDCB J8 for proper connection and correct as necessary. 4. PS11 I/O check, sensor check • Control signal: SDCB J8-10 (ON) • Location of electrical component: FS-536/FS-536SD 3-P, FS-537/FS-537SD 3-P 5. M8 operation check • Control signal: SDCB J8-11 to 14 • Location of electrical component: FS-536/FS-536SD 3-P, FS-537/FS-537SD 2-P 6. Replace M8. (FS-536SD/FS-537SD) 7. Replace SDCB. (FS-536SD/FS-537SD) 8. Replace FSCB. (FS-536SD/FS-537SD)

Code: C11A2
Description: Receiving roller retraction motor drive malfunction.
<When FS-536 or FS-536SD is installed> The receiving roller retraction sensor (PS11) is not turned OFF (blocked) or ON (unblocked) even after the set period of time has elapsed after the receiving roller retraction motor (M4) is turned ON.
<When FS-537 or FS-537SD is installed> The receiving roller retraction sensor (PS22) is not turned OFF (blocked) or ON (unblocked) even after the set period of time has elapsed after the receiving roller retraction motor (M10) is turned ON.
Causes: <When FS-536 or FS-536SD is installed> • Receiving roller retraction motor (M4) • Receiving roller retraction sensor (PS11) • FS control board (FSCB)
<When FS-537 or FS-537SD is installed> • Receiving roller retraction motor (M10) • Receiving roller retraction sensor (PS22) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536 or FS-536SD is installed 1. Check the connector between M4-FSCB J4 for proper connection and correct as necessary. 2. Check the connector of M4 for proper drive coupling and correct as necessary. 3. Check the connector between PS11-FSCB J4 for proper connection and correct as necessary. 4. PS11 I/O check, sensor check • Control signal: FSCB J4-16 (ON) • Location of electrical component: FS-536/FS-536SD 16-C 5. M4 operation check • Control signal: FSCB J4<A>-1 to 4 • Location of electrical component: FS-536/FS-536SD 13-C 6. Replace M4. 7. Replace FSCB.
(b) When FS-537 or FS-537SD is installed 1. Check the connector between M10-FSCB J12 for proper connection and correct as necessary. 2. Check the connector of M10 for proper drive coupling, and correct as necessary. 3. Check the connector between PS22-FSCB J12 for proper connection and correct as necessary. 4. PS22 I/O check, sensor check • Control signal: FSCB J12-7 (ON) • Location of electrical component: FS-537/FS-537SD 17-D 5. M10 operation check • Control signal: FSCB J12-1 to 4 • Location of electrical component: FS-537/FS-537SD 17-D 6. Replace M10. 7. Replace FSCB.

Code: C11C5
Description: Paper size detect board malfunction. <When FS-537+PK-523 or FS-537SD+PK-523 is installed> The size of a transported paper is not detected, causing no punch operation.
Causes: Paper size detect board (PSDTB)
Troubleshooting Guides: 1. Check the sensor part of PSDTB, to clean if it is dirty. 2. Check the connector between PSDTB-PKCB CN38 for proper connection and correct as necessary. 3. Replace PSDTB.

Code: C11E1
Description: Paper exit switching drive malfunction.
<When FS-536 or FS-536SD is installed> The exchange folded paper output sensor (PS30) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the FNS entry transport motor (M2) is turned ON.
<When FS-537 or FS-537SD is installed> The route change gate home sensor (PS21) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the route change gate motor (M4) is turned ON.
Causes: <When FS-536 or FS-536SD is installed> • FNS entry transport motor (M2) • Exchange folded paper output sensor (PS30) • FS control board (FSCB)
<When FS-537 or FS-537SD is installed> • Route change gate motor (M4) • Route change gate home sensor (PS21) • FS control board (FSCB)
Troubleshooting Guides: (a) When FS-536 or FS-536SD is installed 1. Check the connector between M2-FSCB J9 for proper connection and correct as necessary. 2. Check the connector of M2 for proper drive coupling and correct as necessary. 3. Check the connector between PS30-FSCB J4 for proper connection and correct as necessary. 4. PS30 I/O check, sensor check • Control signal: FSCB J4<A>-15 (ON) • Location of electrical component: FS-536/FS-536SD 14-C 5. M2 operation check • Control signal: FSCB J9<A>-1 to 4 • Location of electrical component: FS-536/FS-536SD 12-C 6. Replace M2. 7. Replace FSCB.
(b) When FS-537 or FS-537SD is installed 1. Check the connector between M4-FSCB J12 for proper connection and correct as necessary. 2. Check the connector of M4 for proper drive coupling and correct as necessary. 3. Check the connector between PS21-FSCB J12 for proper connection and correct as necessary. 4. PS21 I/O check, sensor check • Control signal: FSCB J12-12 (ON) • Location of electrical component: FS-537/FS-537SD 18-D 5. M4 operation check • Control signal: FSCB J21-8 to 9 • Location of electrical component: FS-537/FS-537SD 18-D 6. Replace M4. 7. Replace FSCB.

Code: C11E2
Description: Paper exit switching (JS) drive malfunction. <When FS-537 or FS-537SD is installed> The sub tray/JS route change gate home sensor (PS23) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the sub tray discharge motor (M18) is turned ON.
Causes: • Sub tray discharge motor (M18) • Sub tray/JS route change gate home sensor (PS23) • FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M18-FSCB J12 for proper connection and correct as necessary. 2. Check the connector of M18 for proper drive coupling and correct as necessary. 3. Check the connector between PS23-FSCB J12 for proper connection and correct as necessary. 4. PS23 I/O check, sensor check • Control signal: FSCB J12<A>-16 (ON) • Location of electrical component: FS-537/FS-537SD 17-D 5. M18 operation check • Control signal: FSCB J12<A>-5 to 6 • Location of electrical component: FS-537/FS-537SD 16-D 6. Replace M18. 7. Replace FSCB.

Code: C1403
Description: PK flash ROM error. <When FS-537+PK-523 or FS-537SD+PK-523 is installed> Data of flash ROM of the PK is determined to be faulty when the main power switch is turned ON.
Causes: Punch control board (PKCB)
Troubleshooting Guides: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Rewrite the firmware. 3. Replace PKCB.

Code: C1404
Description: PI flash ROM error. <When FS-537+PI-507 or FS-537SD+PI-507 is installed> Data of flash ROM of the PI is determined to be faulty when the main power switch is turned ON.
Causes: PI drive board (PIDB)
Troubleshooting Guides: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Rewrite the firmware. 3. Replace PIDB.

Code: C2151
Description: Transfer roller pressure welding alienation.
• The 2nd transfer pressure sensor (PS50) is not turned OFF (unblock) (retracting) even after the lapse of a given period of time after the 2nd transfer pressure motor (M3) has started rotating during the 2nd image transfer roller is retracting. • The 2nd transfer pressure sensor (PS50) is not turned ON (block) (pressuring) even after the lapse of a given period of time after the 2nd transfer pressure motor (M3) has started rotating during the 2nd image transfer roller is pressuring.
Causes: • 2nd transfer pressure motor (M3) • 2nd transfer pressure sensor (PS50) • Paper feed/transport drive board (PFTDB)
Troubleshooting Guides: 1. Check the connector between M3-relay CN271B-PFTDB CN8 for proper connection and correct as necessary. 2. Check the connector of M3 for proper drive coupling and correct as necessary. 3. Check the connector between PS50-relay CN271A-PFTDB CN2 for proper connection and correct as necessary. 4. PS50 I/O check, sensor check • Control signal: PFTDB CN2-9 (ON) • Location of electrical component: 5-P 5. M3 load check • Check code: 24 • Multi code: 4, 5 • Control signal: PFTDB CN8-1 to 2 • Location of electrical component: 6-P 6. Replace M3. 7. PFTDB F17 conduction check 8. Replace PFTDB.

Code: C2152 … C2158
Description: • C2152: Transfer belt fault at initial position return • C2153: Transfer belt spacing fault at K pressure switching • C2154: Transfer belt contact fault at all pressure switching • C2155: Transfer belt contact fault after K pressure established • C2156: Transfer belt spacing fault after all pressure established • C2157: Transfer belt contact fault at all retraction switching • C2158: Transfer belt contact fault after all retraction established
• C2152: The state of the 1st transfer pressure sensor/K (PS51) or the 1st transfer pressure sensor/YMC (PS52) is not changed within a predetermined period of time during an initial position return. • C2153: Unblocking of the 1st transfer pressure sensor/K (PS51) and blocking of the 1st transfer pressure sensor/YMC (PS52) are not detected within a predetermined period of time after the K pressure sequence has been started. • C2154: Unblocking of the 1st transfer pressure sensor/K (PS51) and unblocking of the 1st transfer pressure sensor/YMC (PS52) are not detected within a predetermined period of time after the all pressure sequence has been started. • C2155: The 1st transfer pressure sensor/K (PS51) is blocked or the 1st transfer pressure sensor/YMC (PS52) is unblocked after the lapse of a predetermined period of time after the K pressure sequence has been completed. • C2156: The 1st transfer pressure sensor/K (PS51) or the 1st transfer pressure sensor/YMC (PS52) is blocked after the lapse of a predetermined period of time after the all pressure sequence has been completed. • C2157: ‘Switching from pressure to retraction’ is not detected with respect to the 1st transfer pressure sensor/K (PS51) and the 1st transfer pressure sensor/YMC (PS52) within a predetermined period of time after a retraction sequence has been started. • C2158: The 1st transfer pressure sensor/K (PS51) or the 1st transfer pressure sensor/YMC (PS52) is unblocked after the lapse of a predetermined period of time after a retraction sequence has been completed.
Causes: • Transfer belt unit • 1st transfer pressure motor (M21) • 1st transfer pressure sensor/K (PS51) • 1st transfer pressure sensor/YMC (PS52) • Process drive board (PDB) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the connector between M21-relay CN428-PDB CN7 for proper connection and correct as necessary. 2. Check the connector of M21 for proper drive coupling and correct as necessary. 3. Check the transfer roller pressure gear of the transfer belt unit for proper engagement and the roller for rolling operation, and correct any faulty motion. 4. Check the connector between PS51-relay CN297-MFPB CN4E for proper connection and correct as necessary. 5. Check the connector between PS52-relay CN297-MFPB CN4E for proper connection and correct as necessary. 6. PS51 I/O check, sensor check • Control signal: MFPB CN4E<A>-1 (ON) • Location of electrical component: 15-C 7. PS52 I/O check, sensor check • Control signal: MFPB CN4E<A>-4 (ON) • Location of electrical component: 15-C 8. M21 load check • Check code: 24 • Multi code: 1, 2, 3, 4 • Control signal: PDB CN7-5 to 8 • Location of electrical component: 17-P 9. Replace M21. 10. Replace the transfer belt unit. 11. PDB F2 conduction check 12. Replace PDB. 13. MFPB F2E conduction check 14. Replace MFPB.

Code: C2204
Description: Waste toner transport motor failure to turn. The waste toner lock sensor (PS23) continues to be turned ON (blocked) or OFF (unblocked) for a predetermined period of time when the motor is turning.
Causes: • Waste toner lock sensor (PS23) • Waste toner transport motor (M20) • PH relay board (PHRYB) • MFP board (MFPB)
Troubleshooting Guides: 1. Clean the PS23 if it has toner or paper dust, etc. 2. Replacing the waste toner box. 3. Check the connector between M20-PHRYB CN12 for proper connection and correct as necessary. 4. Check the connector of M20 for proper drive coupling and correct as necessary. 5. Check the connector between PS23-MFPB CN4E for proper connection and correct as necessary. 6. PS23 I/O check, sensor check • Control signal: MFPB CN4E<A>-12 (ON) • Location of electrical component: 16-C 7. M20 load check • Check code: 44 • Multi code: 0 • Control signal: PHRYB CN12-6 to 9 • Location of electrical component: 9-B 8. Replace M20. 9. PHRYB ICP6 conduction check. 10. Replace PHRYB. 11. MFPB F2E conduction check 12. Replace MFPB.

Code: C2253, C2254
Description: • C2253: PC motor/YMC failure to turn • C2254: PC motor/YMC turning at abnormal timing
• C2253: The motor lock signal remains HIGH for a predetermined continuous period of time while the motor is turning. • C2254: The motor lock signal remains LOW for a predetermined continuous period of time while the motor remains stationary.
Causes: • Imaging unit/C • Imaging unit/M • Imaging unit/Y • PC motor/YMC (M16) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the connector between M16-MFPB CN10E, CN16E for proper connection and correct as necessary. 2. Check the connector of M16 for proper drive coupling and correct as necessary. 3. M16 load check • Check code: 41 • Multi code: 2, 3, 4 • Control signal: MFPB CN10E-3 (REM), MFPB CN10E-6 (LOCK), MFPB CN16E-3 (DC24V) • Location of electrical component: 5-K 4. Replace M16. 5. Replace the imaging unit/Y,M,C. 6. MFPB F9E conduction check 7. Replace MFPB.

Code: C2255, C2256
Description: • C2255: Developing motor/YMC failure to turn • C2256: Developing motor/YMC turning at abnormal timing
• C2255: The motor lock signal remains HIGH for a predetermined continuous period of time while the motor is turning. • C2256: The motor lock signal remains LOW for a predetermined continuous period of time while the motor remains stationary.
Causes: • Imaging unit/C • Imaging unit/M • Imaging unit/Y • Developing motor/YMC (M17) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the connector between M17-MFPB CN10E, CN16E for proper connection and correct as necessary. 2. Check the connector of M17 for proper drive coupling and correct as necessary. 3. M17 load check • Check code: 50 • Multi code: 2, 3, 4 • Control signal: MFPB CN16E-1 (DC24V), MFPB CN10E-9 (START/STOP) • Location of electrical component: 6-K 4. Replace M17. 5. Replace the imaging unit/Y,M,C. 6. MFPB F9E conduction check 7. Replace MFPB.

Code: C2257, C2258
Description: • C2257: Cleaning brush motor failure to turn • C2258: Cleaning brush motor turning at abnormal timing
• C2257: The motor lock signal remains HIGH for a predetermined continuous period of time while the motor is turning. • C2258: The motor lock signal remains LOW for a predetermined continuous period of time while the motor remains stationary.
Causes: • Transfer belt unit (cleaner unit) • Cleaning brush motor (M38) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the connector between M38-MFPB CN24E for proper connection and correct as necessary. 2. Check the connector of M38 for proper drive coupling and correct as necessary. 3. Check the cleaner unit gear of the transfer belt unit for rotation and correct any faulty rotation. 4. M38 load check • Check code: 47 • Multi code: 1, 2, 3, 4 • Control signal: MFPB CN24E-1 (DC24V), MFPB CN24E-4 (START/STOP) • Location of electrical component: 8 to 9-K 5. Replace M38. 6. Replace the transfer belt unit. 7. MFPB F5E conduction check 8. Replace MFPB.

Code: C2259, C225A
Description: • C2259: Developing motor/K failure to turn • C225A: Developing motor/K turning at abnormal timing
• C2259: The motor lock signal remains HIGH for a predetermined continuous period of time while the motor is turning. • C225A: The motor lock signal remains LOW for a predetermined continuous period of time while the motor remains stationary.
Causes: • Developing unit/K • Developing motor/K (M19) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the connector between M19-MFPB CN10E, CN16E for proper connection and correct as necessary. 2. Check the connector of M19 for proper drive coupling and correct as necessary. 3. M19 load check • Check code: 50 • Multi code: 5, 6, 7, 8 • Control signal: MFPB CN16E-5 (DC24V), MFPB CN10E<A>-9 (START/STOP) • Location of electrical component: 5-K 4. Replace M19. 5. Replace the developing unit/K. 6. MFPB F10E conduction check 7. Replace MFPB.

Code: C225B, C225C
Description: • C225B: PC motor/K failure to turn • C225C: PC motor/K turning at abnormal timing
• C225B: The motor lock signal remains HIGH for a predetermined continuous period of time while the motor is turning. • C225C: The motor lock signal remains LOW for a predetermined continuous period of time while the motor remains stationary.
Causes: • Drum unit/K • PC motor/K (M18) • Process drive board (PDB) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the connector between M18-PDB CN5 for proper connection and correct as necessary. 2. Check the connector of M18 for proper drive coupling and correct as necessary. 3. M18 load check • Check code: 41 • Multi code: 5, 6, 7, 8 • Control signal: PDB CN5-1 (DC24V), PDB CN5-4 (DC3.3V), PDB CN5-5 (REM), PDB CN5-8 (LOCK) • Location of electrical component: 16-P 4. Replace M18. 5. Replace the drum unit/K. 6. PDB F6 or F7 conduction check 7. Replace PDB. 8. Replace MFPB.

Code: C2350
Description: Toner suction fan failure to turn. The fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning.
Causes: • Toner suction fan (FM7) • Process drive board (PDB)
Troubleshooting Guides: 1. Check the connector between FM7-relay CN326-PDB CN10 for proper connection and correct as necessary. 2. Check the fan for possible overload and correct as necessary. 3. FM7 load check • Check code: 42 • Multi code: 1 • Control signal: PDB CN10-7 (DRIVE), PDB CN10-9 (LOCK) • Location of electrical component: 19-X 4. Replace FM7. 5. PDB F4 conduction check 6. Replace PDB.

Code: C2353
Description: IU cooling fan failure to turn. The fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning.
Causes: • IU cooling fan (FM15) • PH relay board (PHRYB)
Troubleshooting Guides: 1. Check the connector between FM15-relay CN707-PHRYB CN13 for proper connection and correct as necessary. 2. Check the fan for possible overload and correct as necessary. 3. FM15 load check • Check code: 42 • Multi code: 4 • Control signal: PHRYB CN13-1 (DRIVE), PHRYB CN13-3 (LOCK) • Location of electrical component: 8-B 4. Replace FM15. 5. PHRYB ICP6 conduction check. 6. Replace PHRYB.

Code: C2414
Description: Developing unit/K new article release. The status with the new unit is not cleared after the new developing unit/K is set.
Causes: • Developing unit/K • PH relay board (PHRYB)
Troubleshooting Guides: 1. Reinstall the developing unit/K. 2. Check the connector between the developing unit/K-relay CN214-PHRYB CN2 for proper connection and correct as necessary. 3. Replace the developing unit/K. 4. PHRYB ICP7 conduction check. 5. Replace PHRYB.

Code: C2551, C2553, C2555
Description: • C2551: Abnormally low toner density detected cyan TCR sensor • C2553: Abnormally low toner density detected magenta TCR sensor • C2555: Abnormally low toner density detected yellow TCR sensor
When sampling data is determined in TC ratio calculation control, TCR sensor output is lower than a predetermined value for a predetermined number of times in a row even though there is toner in the sub hopper.
Causes: • Imaging unit/C • Imaging unit/M • Imaging unit/Y • Toner cartridge/C • Toner cartridge/M • Toner cartridge/Y • Toner empty sensor/C (RS/C) • Toner empty sensor/M (RS/M) • Toner empty sensor/Y (RS/Y) • Toner supply motor/Y (M9) • Toner supply motor/M (M10) • Toner supply motor/C (M11) • Toner cartridge motor/YM (M13) • Toner cartridge motor /CK (M14) • Process drive board (PDB) • MFP board (MFPB)
Troubleshooting Guides: 1. Perform image troubleshooting procedure if image density is low. 2. Reinstall the imaging unit. 3. Reinstall the toner cartridge. 4. Check the connector between M9-relay CN258-PDB CN8 for proper connection and correct as necessary. 5. Check the connector between M10-relay CN258-PDB CN8 for proper connection and correct as necessary. 6. Check the connector between M11-relay CN258-PDB CN8 for proper connection and correct as necessary. 7. Check the connector between M13-relay CN320-relay CN330-PDB CN7 for proper connection and correct as necessary. 8. Check the connector between M14-relay CN321-relay CN428-PDB CN7 for proper connection and correct as necessary. 9. Check the connector of M9, M10, M11, M13, M14 for proper drive coupling and correct as necessary. 10. Check the connector between RS/C-relay CN291-relay CN265-MFPB CN4E for proper connection and correct as necessary. 11. Check the connector between RS/M-relay CN246-relay CN265-MFPB CN4E for proper connection and correct as necessary. 12. Check the connector between RS/Y-relay CN247-relay CN265-MFPB CN4E for proper connection and correct as necessary. 13. RS/C, RS/M, RS/Y I/O check, sensor check • Control signal: MFPB CN4E-6 (RS/C), MFPB CN4E-8 (RS/M), MFPB CN4E-10 (RS/Y) • Location of electrical component: 16 to 17-C 14. M9, M10, M11 operation check (At this time, IU must be non-installation.) • Control signal: PDB CN8-1 to 4 (M9), PDB CN8-5 to 8 (M10), PDB CN8-9 to 12 (M11) • Location of electrical component: 15 to 16-X 15. M13, M14 operation check • Control signal: PDB CN7-9 to 12 (M13), PDB CN7-1 to 4 (M14) • Location of electrical component: 17 to 18-P 16. Replace M9, M10, M11. 17. Replace M13. 18. Replace M14. 19. Replace the corresponding imaging unit. 20. PDB F1 or F2 conduction check 21. Replace PDB. 22. Replace MFPB.

Code: C2552, C2554, C2556
Description: • C2552: Abnormally high toner density detected cyan TCR sensor • C2554: Abnormally high toner density detected magenta TCR sensor • C2556: Abnormally high toner density detected yellow TCR sensor
TC ratio in the developing unit, which is determined by toner replenishing amount control mechanism, is a predetermined value or more for a given number of times consecutively.
Causes: • Imaging unit/C • Imaging unit/M • Imaging unit/Y • Toner cartridge/C • Toner cartridge/M • Toner cartridge/Y • Sub hopper unit • Toner empty sensor/C (RS/C) • Toner empty sensor/M (RS/M) • Toner empty sensor/Y (RS/Y) • MFP board (MFPB)
Troubleshooting Guides: 1. Reinstall the imaging unit. 2. Reinstall the toner cartridge. 3. Check the connector between RS/C-relay CN291-relay CN265-MFPB CN4E for proper connection and correct as necessary. 4. Check the connector between RS/M-relay CN246-relay CN265-MFPB CN4E for proper connection and correct as necessary. 5. Check the connector between RS/Y-relay CN247-relay CN265-MFPB CN4E for proper connection and correct as necessary. 6. RS/C, RS/M, RS/Y I/O check, sensor check • Control signal: MFPB CN4E-6 (RS/C), MFPB CN4E-8 (RS/M), MFPB CN4E-10 (RS/Y) • Location of electrical component: 16 to 17-C 7. Replace the corresponding imaging unit. 8. Replace MFPB. 9. Replace the sub hopper unit.

Code: C2557
Description: Abnormally low toner density detected black TCR sensor. When sampling data is determined in TC ratio calculation control, TCR sensor output is lower than a predetermined value for a predetermined number of times in a row even though there is toner in the sub hopper.
Causes: • Developing unit/K • Toner cartridge/K • Toner empty sensor/K (PZS/K) • Toner supply motor/K (M12) • Toner cartridge motor /CK (M14) • Process drive board (PDB) • MFP board (MFPB)
Troubleshooting Guides: 1. Perform image troubleshooting procedure if image density is low. 2. Reinstall developing unit/K. 3. Reinstall toner cartridge/K. 4. Check the connector between M12-relay CN258-PDB CN8 for proper connection and correct as necessary. 5. Check the connector between M14-relay CN321-relay CN428-PDB CN7 for proper connection and correct as necessary. 6. Check the connector of M12, M14 for proper drive coupling and correct as necessary. 7. Check the connector between PZS/K-relay CN248-relay CN265-MFPB CN4E for proper connection and correct as necessary. 8. PZS/K I/O check, sensor check • Control signal: MFPB CN4E-12 (ON) • Location of electrical component: 17-C 9. M12 operation check (At this time, developing/drum unit must be non-installation.) • Control signal: PDB CN8-13 to 16 • Location of electrical component: 16-X 10. M14 operation check • Control signal: PDB CN7-1 to 4 • Location of electrical component: 17-P 11. Replace M12. 12. Replace M14. 13. If the toner empty sensor and its surroundings inside the sub hopper are dirtied with toner, clean them. 14. Replace the developing unit/K. 15. PDB F1 or F2 conduction check 16. Replace PDB. 17. Replace MFPB.

Code: C2558
Description: Abnormally high toner density detected black TCR sensor. The TC ratio of the toner determined by the toner replenishment control is detected to be the predetermined value or over for consecutive times.
Causes: • Developing unit/K • Toner cartridge/K • Sub hopper unit • Toner empty sensor/K (PZS/K) • MFP board (MFPB)
Troubleshooting Guides: 1. Reinstall developing unit/K. 2. Reinstall toner cartridge/K. 3. Check the connector between PZS/K-relay CN248-relay CN265-MFPB CN4E for proper connection and correct as necessary. 4. PZS/K I/O check, sensor check • Control signal: MFPB CN4E-12 (ON) • Location of electrical component: 17-C 5. Replace the developing unit/K. 6. Replace MFPB. 7. Replace the sub hopper unit.

Code: C2559, C255A, C255B
Description: • C2559: Cyan TCR sensor adjustment failure • C255A: Magenta TCR sensor adjustment failure • C255B: Yellow TCR sensor adjustment failure
TCR sensor automatic adjustment does not function properly, failing to adjust to an appropriate value.
Causes: • Imaging unit/C • Imaging unit/M • Imaging unit/Y • PH relay board (PHRYB)
Troubleshooting Guides: 1. Reinstall the imaging unit. 2. Replace the corresponding imaging unit. 3. Replace PHRYB.

Code: C255C
Description: Black TCR sensor adjustment failure. TCR sensor automatic adjustment does not function properly, failing to adjust to an appropriate value.
Causes: • Developing unit/K • PH relay board (PHRYB)
Troubleshooting Guides: 1. Reinstall developing unit/K. 2. Replace the developing unit/K. 3. Replace PHRYB.

Code: C2561 … C2564
Description: • C2561: Cyan TCR sensor failure • C2562: Magenta TCR sensor failure • C2563: Yellow TCR sensor failure • C2564: Black TCR sensor failure
• The TCR sensor input is 0. • This detection is used for detecting disconnection of TCR sensor connector.
Causes: • Imaging unit/C • Imaging unit/M • Imaging unit/Y • Developing unit/K • PH relay board (PHRYB)
Troubleshooting Guides: 1. Reinstall the imaging unit/Y,M,C. 2. Reinstall developing unit/K. 3. Check the connector between the developing unit/K-relay CN214-PHRYB CN2 for proper connection and correct as necessary. 4. Check the connector between the imaging unit/Y-relay CN204-PHRYB CN5 for proper connection and correct as necessary. 5. Check the connector between the imaging unit/M-relay CN207-PHRYB CN5 for proper connection and correct as necessary. 6. Check the connector between the imaging unit/C-relay CN211-PHRYB CN5 for proper connection and correct as necessary. 7. Replace the imaging unit. 8. Replace the developing unit/K. 9. PHRYB ICP1 or ICP7 conduction check. 10. Replace PHRYB.

Code: C2650, C265B
Description: • C2650: Main backup media 1 access error • C265B: Main backup media 2 access error
• The re-written data, which has been read out, checked and founded as error, is read out again and found as error. • The error was found when reading out the counter value. • The main body detects that the back up board is not mounted.
Causes: • C2650: Back up board/1 (ERB/1) • C265B: Back up board/2 (ERB/2) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the connector between ERB/1-MFPB CN11E for proper connection and correct as necessary. 2. Check the connector between ERB/2-relay CN6-MFPB CN11E for proper connection and correct as necessary. 3. Replace MFPB. 4. Replace ERB. (ERB/1 / ERB/2) 5. If the above actions do not solve the problem, contact KM.

Code: C2651, C2652, C2653
Description: • C2651: EEPROM access error (IU C) • C2652: EEPROM access error (IU M) • C2653: EEPROM access error (IU Y)
• The re-written data, which has been read out, checked and founded as error, is read out again and found as error. • The error was found when reading out the counter value.
Causes: • Imaging unit/C • Imaging unit/M • Imaging unit/Y • PH relay board (PHRYB) • MFP board (MFPB)
Troubleshooting Guides: 1. Clean the connection between the imaging unit and the machine if dirty. 2. Reinstall the imaging unit. 3. Check the connector between the imaging unit/Y-relay CN204-PHRYB CN4 for proper connection and correct as necessary. 4. Check the connector between the imaging unit/M-relay CN207-PHRYB CN5 for proper connection and correct as necessary. 5. Check the connector between the imaging unit/C-relay CN211-PHRYB CN5 for proper connection and correct as necessary. 6. Replace the imaging unit. 7. Replace PHRYB. 8. Replace MFPB.

Code: C265A
Description: Main backup media wrongly installation. The ERB/1 and ERB/2 are mounted in a reverse direction.
Causes: • Back up board/1 (ERB/1) • Back up board/2 (ERB/2)
Troubleshooting Guides: 1. Check to see if the ERB/1 and ERB/2 are mounted in a reverse direction. 2. Check the type of the installed ERB and replace it if it is a wrong one. 3. Replace ERB. (ERB/1 / ERB/2)

Code: C2A14
Description: Drum unit/K new release failure. The status with the new unit is not cleared after the new drum unit/K is set.
Causes: • Drum unit/K • PH relay board (PHRYB)
Troubleshooting Guides: 1. Clean the connection between the drum unit/K and the developing unit/K if dirty. 2. Reinstall the drum unit/K. 3. Check the connector between the developing unit/K-relay CN214-PHRYB CN2 for proper connection and correct as necessary. 4. Replace the drum unit/K. 5. PHRYB ICP7 conduction check. 6. Replace PHRYB.

Code: C2A21 … C2A24
Description: • C2A21: Toner cartridge/C new release failure • C2A22: Toner cartridge/M new release failure • C2A23: Toner cartridge/Y new release failure • C2A24: Toner cartridge/K new release failure
The status with the new unit is not cleared after the new toner cartridge is set.
Causes: • Toner cartridge/Y,M,C,K • MFP board (MFPB)
Troubleshooting Guides: 1. Clean the connection between the toner cartridge and the main body if dirty. 2. Reinstall the toner cartridge. 3. Check the connector between the toner cartridge/Y-relay CN503-MFPB-CN8E for proper connection and correct as necessary. 4. Check the connector between the toner cartridge/M-relay CN503-MFPB-CN8E for proper connection and correct as necessary. 5. Check the connector between the toner cartridge/C-relay CN504-MFPB-CN8E for proper connection and correct as necessary. 6. Check the connector between the toner cartridge/K-relay CN504-MFPB-CN8E for proper connection and correct as necessary. 7. Replace the toner cartridge. 8. Replace MFPB.

Code: C3101, C3103
Description: • C3101: Pressure roller pressure failure
• C3103: Pressure roller release failure
C3101: • The fusing pressure home sensor (PS59) is not turned ON (pressed state) after the set period of time after the fusing pressure roller pressure operation is started. • The fusing pressure home sensor (PS59) is not ON (pressed state) when the fusing pressure roller pressure operation is completed.
C3103: • The fusing pressure home sensor (PS59) is not turned OFF (retracted state) even after the set period of time after the fusing pressure roller retraction operation is started. • The fusing pressure home sensor (PS59) is not OFF (retracted state) when the fusing pressure roller retraction operation is completed.
Causes: • Fusing unit • Fusing pressure home sensor (PS59) • Fusing pressure motor (M29) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the connector between M29-MFPB CN28E for proper connection and correct as necessary. 2. Check the connector of M29 for proper drive coupling and correct as necessary. 3. Check the connector between the fusing unit-relay CN260-MFPB CN21E for proper connection and correct or change as necessary. 4. PS59 I/O check, sensor check • Control signal: MFPB CN21E-5 (ON) • Location of electrical component: 12-C 5. M29 load check • Check code: 45 • Multi code: 7, 8 • Control signal: MFPB CN28E-8 to 11 • Location of electrical component: 7-K 6. Replace M29. 7. Replace the fusing unit. 8. MFPB F16E conduction check 9. Replace MFPB.

Code: C3102
Description: Heating roller failure to turn. During any state other than printing operation, the hard latch signal from one or both of the heating roller rotation latch detection 1 and the heating roller rotation latch detection 2 is turned ON.
Causes: • Fusing unit • Heating roller rotation sensor (PS56) • Fusing motor (M30) • DC power supply (DCPU) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the fusing unit for proper installation and correct as necessary. 2. Check the connector between M30-MFPB CN28E for proper connection and correct as necessary. 3. Check the connector of M30 for proper drive coupling and correct as necessary. 4. Check the connector between the fusing unit-relay CN260-MFPB CN21E for proper connection and correct or change as necessary. 5. PS56 I/O check, sensor check • Control signal: MFPB CN21E-8 (ON) • Location of electrical component: 11-C 6. M30 load check • Check code: 45 • Multi code: 1, 2, 3, 4, 5, 6 • Control signal: MFPB CN28E-1 (DC24V), MFPB CN28E-4 (REM), MFPB CN28E-7 (LOCK) • Location of electrical component: 7-K 7. Replace M30. 8. Replace the fusing unit. 9. MFPB F16E conduction check 10. Replace MFPB. 11. DCPU F851 conduction check. 12. Replace DCPU.

Code: C3201, C3202
Description: • C3201: Fusing motor failure to turn • C3202: Fusing motor turning at abnormal timing
• C3201: The motor lock signal remains HIGH for a predetermined continuous period of time while the motor is turning. • C3202: The motor lock signal remains LOW for a predetermined continuous period of time while the motor remains stationary.
Causes: • Fusing motor (M30) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the connector between M30-MFPB CN28E for proper connection and correct as necessary. 2. Check the loading status of the fusing unit drive, and correct the error as necessary. 3. M30 load check • Check code: 45 • Multi code: 1, 2, 3, 4, 5, 6 • Control signal: MFPB CN28E-1 (DC24V), MFPB CN28E-4 (REM), MFPB CN28E-7 (LOCK) • Location of electrical component: 7-K 4. Replace M30. 5. MFPB F16E conduction check 6. Replace MFPB. 7. DCPU F851 conduction check. 8. Replace DCPU.

Code: C3303
Description: Paper cooling fan/out failure to turn. The fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning.
Causes: • Paper cooling fan/out (FM13) • Process drive board (PDB)
Troubleshooting Guides: 1. Check the connector between FM13-relay CN323-PDB CN10 for proper connection and correct as necessary. 2. Check the fan for possible overload and correct as necessary. 3. FM13 load check • Check code: 42 • Multi code: 13 • Control signal: PDB CN10-13 (DRIVE), PDB CN10-15 (LOCK) • Location of electrical component: 19-X 4. Replace FM13. 5. PDB F4 conduction check 6. Replace PDB.

Code: C3304
Description: Reverse paper cooling fan/2 failure to turn. The fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning.
Causes: • Reverse paper cooling fan/2 (FM5) • Paper feed/transport drive board (PFTDB)
Troubleshooting Guides: 1. Check the connector between FM5-relay CN282-relay CN280-relay CN279-relay CN271B-PFTDB CN2 for proper connection and correct as necessary. 2. Check the fan for possible overload and correct as necessary. 3. FM5 load check • Check code: 42 • Multi code: 16, 17 • Control signal: PFTDB CN2-16 (REM), PFTDB CN2-18 (LOCK) • Location of electrical component: 5-P 4. Replace FM5. 5. PFTDB F14 conduction check 6. Replace PFTDB.

Code: C3305
Description: Reverse paper cooling fan/1 failure to turn. The fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning.
Causes: • Reverse paper cooling fan/1 (FM4) • Paper feed/transport drive board (PFTDB)
Troubleshooting Guides: 1. Check the connector between FM4-relay CN283-relay CN280-relay CN279-relay CN271B-PFTDB CN2 for proper connection and correct as necessary. 2. Check the fan for possible overload and correct as necessary. 3. FM4 load check • Check code: 42 • Multi code: 14, 15 • Control signal: PFTDB CN2-13 (REM), PFTDB CN2-15 (LOCK) • Location of electrical component: 5-P 4. Replace FM4. 5. PFTDB F14 conduction check 6. Replace PFTDB.

Code: C3310
Description: Output tray exhaust fan failure to turn. The fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning.
Causes: • Output tray exhaust fan (FM18) • Process drive board (PDB)
Troubleshooting Guides: 1. Check the connector between FM18-relay CN701-PDB CN9 for proper connection and correct as necessary. 2. Check the fan for possible overload and correct as necessary. 3. FM18 load check • Check code: 42 • Multi code: 25 • Control signal: PDB CN9-9 (DRIVE), PDB CN9-11 (LOCK) • Location of electrical component: 19-P 4. Replace FM18. 5. PDB F3 conduction check 6. Replace PDB.

Code: C3425
Description: Fusing warm-up trouble. • After warm-up operation starts, the heating roller temperature sensor/1 (TEMS1) does not detect a temperature increasing to a predetermined one though a predetermined period of time has elapsed. • From the start of warm-up operation, it does not terminate within a predetermined period of time.
Causes: • Fusing unit • Heating roller temperature sensor/1 (TEMS1) • IH power supply unit (IHPU) • Noise filter (NF1) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the fusing unit for correct installation (whether it is secured in position). 2. Check the open/close operation of the upper right door. 3. Check the connector between TEMS1-relay CN512-MFPB CN31E for proper connection and correct as necessary. 4. Check the connector between NF1 CN1-CN1AC for proper connection and correct as necessary. 5. Check the connector between NF1 CN2-IHPU CN1 for proper connection and correct as necessary. (Japan and Taiwan model only) 6. Check the connector between NF1 CN3-MFPB CN29E for proper connection and correct as necessary. 7. Check the connector between IHPU CN6-MFPB CN26E for proper connection and correct as necessary. 8. Replace the fusing unit. 9. Replace IHPU. 10. Replace NF1. 11. Replace MFPB.

Code: C3722, C3725, C3726
Description: • C3722: Fusing abnormally high temperature detection (Edge of the heating roller) • C3725: Fusing abnormally high temperature detection (Middle of the heating roller) • C3726: Fusing abnormally high temperature detection (Center of the heating roller)
• C3722: Detected temperature of the heating roller temperature sensor/2 (TEMS2) goes beyond a given temperature for a given period of time consecutively.• C3725: Detected temperature of the heating roller temperature sensor/1 (TEMS1) goes beyond a given temperature for a given period of time consecutively. • C3726: Detected temperature of the heating roller temperature sensor/3 (TEMS3) goes beyond a given temperature for a given period of time consecutively.
Causes: • Fusing unit • C3725: Heating roller temperature sensor/1 (TEMS1) • C3722: Heating roller temperature sensor/2 (TEMS2) • C3726: Heating roller temperature sensor/3 (TEMS3) • IH power supply unit (IHPU) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the fusing unit for correct installation (whether it is secured in position). 2. Check the open/close operation of the upper right door. 3. Check the connector between TEMS1, TEMS2, TEMS3-relay CN512-MFPB CN31E for proper connection and correct as necessary. 4. Check the connector between IHPU CN6-MFPB CN26E for proper connection and correct as necessary. 5. Replace the fusing unit. 6. Replace IHPU. 7. Replace MFPB.

Code: C3732, C3736, C3737
Description: • C3732: Fusing abnormally high temperature detection hard protector (Edge of the heating roller)
• C3736: Fusing abnormally high temperature detection hard protector (Middle of the heating roller)
C3737 • Fusing abnormally high temperature detection hard protector (Center of the heating roller) • Fusing unit for incorrect marketing area (The fusing unit for incorrect marketing area is installed)
• An abnormally high temperature is detected on the hard protector circuit (edge of the heating roller). • An abnormally high temperature is detected on the hard protector circuit (middle of the heating roller). • An abnormally high temperature is detected on the hard protector circuit (center of the heating roller).
Causes: • Fusing unit • C3737: Heating roller thermistor/1 (TH1) • C3732: Heating roller temperature sensor/2 (TEMS2) • C3736: Heating roller temperature sensor/3 (TEMS3) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the fusing unit for correct installation (whether it is secured in position). 2. Check the open/close operation of the upper right door. 3. Check the connector between the fusing unit-relay CN261-MFPB CN21E for proper connection and correct or change as necessary. 4. Check the connector between TEMS2, TEMS3-relay CN512-MFPB CN31E for proper connection and correct as necessary. 5. Replace the fusing unit. 6. Replace TEMS2, TEMS3. 7. Replace MFPB.

Code: C3822, C3825
Description: • C3822: Fusing abnormally low temperature detection (Edge of the heating roller)
• C3825: Fusing abnormally low temperature detection (Middle of the heating roller)
• C3822: Detected temperature of the heating roller temperature sensor/2 (TEMS2) goes below a given temperature for a given period of time consecutively.
• C3825: Detected temperature of the heating roller temperature sensor/1 (TEMS1) goes below a given temperature for a given period of time consecutively.
Causes: • Fusing unit • C3825: Heating roller temperature sensor/1 (TEMS1) • C3822: Heating roller temperature sensor/2 (TEMS2) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the fusing unit for correct installation (whether it is secured in position). 2. Check the open/close operation of the upper right door. 3. Check the connector between TEMS1, TEMS2-relay CN512-MFPB CN31E for proper connection and correct as necessary. 4. Replace the fusing unit. 5. MFPB F3E conduction check 6. Replace MFPB.

Code: C3903
Description: Thermostat breaks detection. The motor lock signal remains HIGH for a predetermined continuous period of time while the motor is turning.
Causes: • Fusing unit • Heating roller thermostat (TS1) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the fusing unit for correct installation (whether it is secured in position). 2. Check the open/close operation of the upper right door. 3. Check the connector between the fusing unit-relay CN259-MFPB CN30E for proper connection and correct or change as necessary. 4. Replace the fusing unit. 5. Replace MFPB.

Code: C3922, C3925, C3926
Description: • C3922: Fusing sensor wire breaks detection (Edge of the heating roller) • C3925: Fusing sensor wire breaks detection (Middle of the heating roller) • C3926: Fusing sensor wire breaks detection (Center of the heating roller)
• C3922: The maximum value and minimum value of detected temperature of the heating roller temperature sensor/2 (TEMS2) is compared after a lapse of given time from starting of warm up and the gap between the value of maximum and minimum is below a given temperature. • C3925: The maximum value and minimum value of detected temperature of the heating roller temperature sensor/1 (TEMS1) is compared after a lapse of given time from starting of warm up and the gap between the value of maximum and minimum is below a given temperature. • C3926: The maximum value and minimum value of detected temperature of the heating roller temperature sensor/3 (TEMS3) is compared after a lapse of given time from starting of warm up and the gap between the value of maximum and minimum is below a given temperature.
Causes: • Fusing unit • C3925: Heating roller temperature sensor/1 (TEMS1) • C3922: Heating roller temperature sensor/2 (TEMS2) • C3926: Heating roller temperature sensor/3 (TEMS3) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the fusing unit for correct installation (whether it is secured in position). 2. Check the open/close operation of the upper right door. 3. Check the connector between TEMS1, TEMS2, TEMS3-relay CN512-MFPB CN31E for proper connection and correct as necessary. 4. Replace the fusing unit. 5. MFPB F3E conduction check 6. Replace MFPB.

Code: C392A
Description: Fusing belt temperature sensor/1 contamination (Middle of the heating roller). During waiting after a predetermined period of time after the warm-up stage terminates, the temperature detected by the heating roller thermostat (TH1) exceeds that detected by the heating roller temperature sensor/1 (TEMS1) above a predetermined temperature, and this state continues for a predetermined period of time.
Causes: • Fusing unit • Heating roller temperature sensor/1 (TEMS1) • Heating roller thermistor/1 (TH1) • MFP board (MFPB)
Troubleshooting Guides: 1. Wipe the TEMS1 clean of dirt if any. • Clear away a dirt or a foreign object on the sensor with a cotton swab. • When a dirt is left even if you cleaned the sensor by above procedure, clear away a dirt or a foreign object on the sensor using a cotton swab dampened with the alcohol. And, wipe off the sensor with a dry cotton swab afterwards. 2. Check the TEMS1 for installed position and proper connector connection. 3. Check the connection of the fusing unit. 4. Check the connector between the fusing unit-relay CN261-MFPB CN21E for proper connection and correct or change as necessary. 5. Replace the fusing unit. 6. MFPB F3E conduction check 7. Replace MFPB.

Code: C3B02, C3B03
Description: C3B02: • IH malfunction (CPU) • IH power supply for incorrect marketing area (The IH power supply for incorrect marketing area is installed)
C3B03: IH malfunction (monitor)
C3B02: A failure in communication with the fusing CPU continues for a predetermined period of time.
C3B03: Though the IH heater is OFF, mechanically, the ON status is detected. (Malfunction of IH heater operation)
Causes: • IH power supply unit (IHPU) • Noise filter (NF1) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the open/close operation of the upper right door. 2. Check the connector between NF1 CN2-IHPU CN1 for proper connection and correct as necessary. 3. Check the connector between IHPU CN6-MFPB CN26E for proper connection and correct as necessary. 4. Check the connector between NF1 CN3-MFPB CN29E for proper connection and correct as necessary. 5. Check the connector between CN1AC-NF1 CN1 for proper connection and correct as necessary. 6. Replace IHPU. 7. MFPB F2E or F21E conduction check 8. Replace MFPB.

Code: C3B07, C3B08
Description: C3B07: • IH input power error • Fusing unit for incorrect marketing area (The fusing unit for incorrect marketing area is installed) • IH power supply for incorrect marketing area (The IH power supply for incorrect marketing area is installed)
C3B08: IH input voltage error
C3B07: • While the IH heater was ON, input power stayed at the high voltage power detection value or over for more than the predetermined period of time. • While the IH heater was ON, input power was at the low power detection value or under for more than the predetermined period of time. • While the IH heater was ON, input power was at the high voltage detection value or over for more than the predetermined period of time. • While the IH heater was ON, input power was below the low voltage detection value or under for more than the predetermined period of time. • While the IH heater was ON, inverter power stayed at the upper limit value or over for more than the predetermined period of time. • While the IH heater was ON, output voltage halt was detected.
C3B08: • While the IH heater was ON, input power was at the high voltage detection value or over for more than the predetermined period of time. • While the IH heater was ON, input voltage was at the low power detection value or under for more than the predetermined period of time.
Causes: • Fusing unit • IH coil (IHC) • IH power supply unit (IHPU) • Noise filter (NF1) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the fusing unit for correct installation (whether it is secured in position). 2. Check the marketing area of the fusing unit. If the marketing area is incorrect, replace the fusing unit for proper marketing area. 3. Check the marketing area of IHPU. If the marketing area is incorrect, replace IHPU for proper marketing area. 4. Check the connector between IHPU-IHC for proper connection and correct as necessary. 5. Replace IHC. 6. Replace IHPU. 7. Replace NF1. 8. Replace MFPB.

Code: C3B09
Description: IH communication error. No signal has been received from the IH power supply unit a predetermined number of consecutive times.
Causes: • IH power supply unit (IHPU) • Noise filter (NF1) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the fusing unit for correct installation (whether it is secured in position). 2. Check the open/close operation of the right door. 3. Check the connector between MFPB CN26E-IHPU CN6 for proper connection and correct as necessary. 4. Check the connector between NF1 CN3-MFPB CN29E for proper connection and correct as necessary. 5. Check the connector between CN1AC-NF1 CN1 for proper connection and correct as necessary. 6. Check the connector between NF1 CN2-IHPU CN1 for proper connection and correct as necessary. 7. Replace IHPU. 8. Replace NF1. 9. MFPB F21E conduction check 10. Replace MFPB.

Code: C4002
Description: PH communication error. When the PH relay board (PHRYB) is receiving data, a communication error is detected.
Causes: • PH relay board (PHRYB) • MFP board (MFPB)
Troubleshooting Guides: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Check the connector between MFPB CN6E-PHRYB CN8 for proper connection and correct as necessary. 3. Check the connector between MFPB CN5E-PHRYB CN9 for proper connection and correct as necessary. 4. Rewrite the firmware. 5. PHRYB ICP1 conduction check. 6. Replace PHRYB. 7. MFPB F2E conduction check 8. Replace MFPB.

Code: C40A1 … C40C5
Description: • C40A1: Mechanical controller sub-CPU communication error • C40A2: Mechanical controller PF communication data error • C40A3: Mechanical controller PF transmission timeout • C40A4: Mechanical controller PF communication pulse error • C40C3: CTL PF transmission timeout 1 • C40C5: CTL PF transmission timeout 2
A CPU communication error is detected.
Causes: MFP board (MFPB)
Troubleshooting Guides: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Rewrite the firmware. 3. MFPB F2E conduction check 4. Replace MFPB.

Code: C4101
Description: Polygon motor rotation trouble. • The polygon motor fails to turn stably even after the lapse of a given period of time after activating the polygon motor. • Motor lock signal detects HIGH for a given period time consecutively during the polygon motor is rotating.
Causes: • PH unit • PH relay board (PHRYB)
Troubleshooting Guides: 1. Check the connector between the PH unit-PHRYB CN14 for proper connection and correct as necessary. 2. Replace the PH unit. 3. PHRYB ICP4 conduction check. 4. Replace PHRYB.

Code: C4301
Description: PH cooling fan failure to turn. The fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning.
Causes: • PH cooling fan (FM14) • PH relay board (PHRYB)
Troubleshooting Guides: 1. Check the connector between FM14-relay CN202-PHRYB CN12 for proper connection and correct as necessary. 2. Check the fan for possible overload and correct as necessary. 3. FM14 load check • Check code: 42 • Multi code: 20, 21 • Control signal: PHRYB CN12-4 (DRIVE), PHRYB CN12-5 (LOCK) • Location of electrical component: 8-B 4. Replace FM14. 5. PHRYB ICP6 conduction check. 6. Replace PHRYB.

Code: C4501
Description: Laser malfunction. • SOS signal is not detected even after the lapse of a given period of time after starting the laser output. • SOS signal is not detected for a given period of time during printing or IDC sensor adjustment.
Causes: • PH unit • PH relay board (PHRYB) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the connector between the PH unit-PHRYB CN10 for proper connection and correct as necessary. 2. Replace the PH unit. 3. PHRYB ICP2 conduction check. 4. Replace PHRYB. 5. Replace MFPB.

Code: C5104, C5105
Description: • C5104: Transfer belt motor rotation trouble • C5105: Transfer belt motor turning at abnormal timing
• C5104: The motor lock signal remains HIGH for a predetermined continuous period of time while the motor is turning. • C5105: The motor lock signal remains LOW for a predetermined continuous period of time while the motor remains stationary.
Causes: • Transfer belt unit • Transfer belt motor (M1) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the connector between M1-MFPB CN10E, CN16E for proper connection and correct as necessary. 2. Check the loading status of the transfer belt drive, and correct the error as necessary. 3. Check the drive gear of the transfer belt unit for rotation and correct any faulty rotation. 4. M1 load check • Check code: 46 • Multi code: 1, 2, 3, 4 • Control signal: MFPB CN10E<A>-3 (REM), MFPB CN10E<A>-6 (LOCK), MFPB CN16E-7 (DC24V), MFPB CN10E<A>-2 (DC3.3V) • Location of electrical component: 5-K 5. Replace M1. 6. Replace the transfer belt unit. 7. MFPB F2E or F11E conduction check 8. Replace MFPB.

Code: C5304
Description: IH power supply cooling fan failure to turn. The fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning.
Causes: • IH power supply cooling fan (FM10) • Process drive board (PDB)
Troubleshooting Guides: 1. Check the connector between FM10-relay CN298-PDB CN9 for proper connection and correct as necessary. 2. Check the fan for possible overload and correct as necessary. 3. FM10 load check • Check code: 42 • Multi code: 5, 6 • Control signal: PDB CN9-16 (DRIVE), PDB CN9-17 (LOCK) • Location of electrical component: 19-P 4. Replace FM10. 5. PDB F3 conduction check 6. Replace PDB.

Code: C5306
Description: IH coil cooling fan failure to turn. The fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning.
Causes: • IH coil cooling fan (FM11) • Process drive board (PDB)
Troubleshooting Guides: 1. Check the connector between FM11-relay CN324-PDB CN10 for proper connection and correct as necessary. 2. Check the fan for possible overload and correct as necessary. 3. FM11 load check • Check code: 42 • Multi code: 7, 8 • Control signal: PDB CN10-4 (DRIVE), PDB CN10-6 (LOCK) • Location of electrical component: 18-X 4. Replace FM11. 5. PDB F4 conduction check 6. Replace PDB.

Code: C5351
Description: DC power supply cooling fan failure to turn. The fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning.
Causes: • DC power supply cooling fan (FM9) • DC power supply (DCPU) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the connector between FM9-relay CN333-MFPB CN23E for proper connection and correct as necessary. 2. Check the fan for possible overload and correct as necessary. 3. FM9 load check • Check code: 42 • Multi code: 9, 10 • Control signal: MFPB CN23E-3 (DRIVE), MFPB CN23E-5 (LOCK) • Location of electrical component: 8-K 4. Replace FM9. 5. Replace DCPU. 6. MFPB F6E conduction check 7. Replace MFPB.

Code: C5355
Description: Toner cartridge cooling fan failure to turn. The fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning.
Causes: • Toner cartridge cooling fan (FM8) • Process drive board (PDB)
Troubleshooting Guides: 1. Check the connector between FM8-relay CN328-PDB CN10 for proper connection and correct as necessary. 2. Check the fan for possible overload and correct as necessary. 3. FM8 load check • Check code: 42 • Multi code: 24 • Control signal: PDB CN10-10 (DRIVE), PDB CN10-12 (LOCK) • Location of electrical component: 19-X 4. Replace FM8. 5. PDB F4 conduction check 6. Replace PDB.

Code: C5360
Description: Exhaust fan 1 failure to turn (When CU-102 is installed). The fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning.
Causes: • Exhaust fan 1 (FM14) • Clean unit drive board (CUDB) • Process drive board (PDB)
Troubleshooting Guides: 1. Check the connector between FM14-relay CN316-CUDB CN2 for proper connection and correct as necessary. 2. Check the connector between CUDB CN1-relay CN315-PDB CN6 for proper connection and correct as necessary. 3. Check the fan for possible overload and correct as necessary. 4. FM14 load check • Check code: 42 • Multi code: 27 • Control signal: CUDB CN2-1 (REM), CUDB CN2-3 (LOCK) • Location of electrical component: 16-Y 5. Replace FM14. 6. Replace CUDB. 7. PDB PS1 conduction check 8. Replace PDB.

Code: C5370
Description: MFP control board cooling fan failure to turn. The fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning.
Causes: • MFP controller cooling fan (FM17) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the connector between FM17-MFPB CN19 for proper connection and correct as necessary. 2. Check the fan for possible overload and correct as necessary. 3. FM17 operation check • Control signal: MFPB CN19-2 (REM), MFPB CN19-3 (LOCK) • Location of electrical component: 10-C 4. Replace FM17. 5. Replace MFPB.

Code: C5372
Description: MFP control board CPU temperature failure.
Temperature failure of CPU on the MFP board was detected.
Causes: MFP board (MFPB)
Troubleshooting Guides: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Check for clogging in the ventilation path between the MFPB and the power supply cooling fan, and correct as necessary. 3. Replace MFPB.

Code: C5601
Description: Engine control malfunction. Engine control malfunction is detected with port monitor control.
Causes: MFP board (MFPB)
Troubleshooting Guides: 1. Check the connectors on MFPB for proper connection and correct as necessary. 2. Rewrite the firmware. 3. Replace MFPB.

Code: C5603
Description: Process drive board communication error. Communication error is detected in process drive board.
Causes: • Process drive board (PDB) • MFP board (MFPB)
Troubleshooting Guides: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Check the connector between PDB CN3-MFPB CN6E for proper connection and correct as necessary. 3. Check the connector between PDB CN2-MFPB CN18E for proper connection and correct as necessary. 4. PDB F7 conduction check 5. Replace PDB. 6. MFPB F2E conduction check 7. Replace MFPB.

Code: C5605, C5606
Description: • C5605: Engine communication data error • C5606: Engine transmission timeout. A communication error is detected between CPUs.
Causes: MFP board (MFPB)
Troubleshooting Guides: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Rewrite the firmware. 3. Replace MFPB.

Code: C6001
Description: DF related configuration error 1. Inconsistency in the configuration with the installed DF is detected on the main body.
Causes: • DF control board (DFCB) • Dual scan image processing board (DSIPB) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the type of the installed DF and replace it if it is a wrong one. 2. Check the connector between DFCB CN12-relay CN47-MFPB CN1E for proper connection and correct as necessary. 3. Check the connector between DSIPB CN1-MFPB CN24 for proper connection and correct as necessary. 4. Replace DFCB. 5. Replace DSIPB. 6. Replace MFPB.

Code: C6002
Description: DF related configuration error 2. Inconsistency in the configuration with the installed DF is detected on the DF.
Causes: • DF control board (DFCB) • Dual scan image processing board (DSIPB)
Troubleshooting Guides: 1. Check the type of the installed DF and replace it if it is a wrong one. 2. Correct the harness connection between DFCB CN12-relay CN47-MFPB CN1E if faulty. 3. Correct the harness connection between DSIPB CN1-MFPB CN24 if faulty. 4. Check the connectors of the dual scan image processing board (DSIPB) for proper connection, and correct as necessary. (Direction of the point of contact and connection state of the flat cable in particular)

Code: C6102, C6103
Description: • C6102: Drive system home sensor malfunction • C6103: Slider over running
C6102: • The scanner home sensor is unable to detect the scanner located at its home position. • The scanner home sensor is unable to detect a scanner even when the scanner motor has been driven to move the scanner over the maximum travelling distance. • The scanner home sensor detects the scanner when the scanner has moved the maximum travelling distance from the position, at which it blocks the scanner home sensor.
C6103: The scanner home sensor detects the scanner at its home position during a period of time that begins with the time when a prescan command and a scan preparation command are executed and ends when a home return command is executed.
Causes: • Scanner home sensor (PS201) • Scanner motor (M201) • Scanner drive board (SCDB) • MFP board (MFPB)
Troubleshooting Guides: 1. Correct or change the scanner drive (pulley, gear, belt) if it is faulty. 2. Correct the scanner motor set screw if loose. 3. Adjust [Image Position: Leading Edge] and [Sub Scan Zoom Adj.]. 4. Check the connector between PS201-SCDB CN6 for proper connection and correct as necessary. 5. Check the connector between M201-SCDB CN4 for proper connection and correct as necessary. 6. Check the connector between SCDB CN2-MFPB CN1E for proper connection and correct as necessary. 7. PS201 I/O check, sensor check • Control signal: SCDB CN6-3 (ON) • Location of electrical component: 23-P 8. M201 operation check • Control signal: SCDB CN4-1 to 4 • Location of electrical component: 23-P 9. Replace SCDB. 10. MFPB F3E conduction check 11. Replace MFPB.

Code: C6104, C6105
Description: • C6104: Back side cleaning home sensor abnormality (initial) • C6105: Back side cleaning home sensor abnormality (normal)
C6104: • The back side cleaning home sensor (PS9) does not change from H to L even after the lapse of a given period of time after the home position detecting operation is started at the initial operation. • The back side cleaning home sensor (PS9) does not change from H to L even after the lapse of a given period of time after the home position detecting operation is started at the initial operation.
C6105: At the time of operation other than the initial operation, the back side cleaning home sensor (PS9) error is detected.
Causes: • Back side cleaning home sensor (PS9) • Back side cleaning motor (M7) • DF control board (DFCB)
Troubleshooting Guides: 1. Check the connector between M7-DFCB CN14 for proper connection and correct as necessary. 2. Check the connector of M7 for proper drive coupling and correct as necessary. 3. Check the connector between PS9-relay CN121-DFCB CN18 for proper connection and correct as necessary. 4. PS9 I/O check, sensor check • Control signal: DFCB CN18-6 (ON) • Location of electrical component: DF 3 to 4-C 5. M7 operation check • Control signal: DFCB CN14-6 to 9 • Location of electrical component: DF 6-C 6. Replace M7. 7. DFCB ICP4 or ICP8 conduction check. 8. Replace DFCB.

Code: C6704
Description: Image input time out. Image data is not input from the scanner to the MFP board (MFPB).
Causes: • MFP board (MFPB) • CCD board (CCDB)
Troubleshooting Guides: 1. Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Memory Bus Check] -> [Scanner -> Memory], and conduct the memory bus function. 2. Correct the harness connection between scanner section and MFPB if faulty. 3. Replace the CCD unit. 4. MFPB F3E conduction check 5. Replace MFPB.

Code: C6751
Description: CCD gain adjustment failure. • The adjustment value is 0 or 255 during a CCD clamp adjustment. • The peak value of the output data is 64 or less during a CCD gain adjustment.
Causes: • LED exposure unit • Scanner drive board (SCDB) • CCD board (CCDB) • MFP board (MFPB)
Troubleshooting Guides: 1. Correct the harness connection between CCDB PJ3-MFPB CN9 if faulty. 2. Correct the harness connection between CCDB PJ5-SCDB CN5 if faulty. 3. Correct the harness connection between SCDB CN1-DCPU CN005 if faulty. 4. Check for possible extraneous light and correct as necessary. 5. Clean the lens, mirrors, CCD surface, and shading sheet if dirty. 6. Correct reflective mirror of the scanner if faulty, or change scanner mirror. 7. Replace SCDB. 8. Replace the CCD unit. 9. MFPB F3E conduction check 10. Replace MFPB.

Code: C6752
Description: ASIC clock input error (front side)
When starting the machine, verification on reading and writing the predetermined value for image processing ASIC on CCD board (CCDB) was conducted, and verification failure was detected.
Causes: • MFP board (MFPB) • CCD board (CCDB)
Troubleshooting Guides: 1. Correct the harness connection of CCDB if faulty. 2. Replace the CCD unit. 3. MFPB F3E conduction check 4. Replace MFPB.

Code: C6753
Description: ASIC clock input error (back side)
When starting the machine, verification on reading and writing the predetermined value for image processing ASIC on dual scan image processing board was conducted, and verification failure was detected.
Causes: • CIS module (CIS) • Dual scan image processing board (DSIPB) • MFP board (MFPB)
Troubleshooting Guides: 1. Correct the harness connection between CIS J101-DSIPB CN2 if faulty. 2. Correct the harness connection between DSIPB CN1-MFPB CN24 if faulty. 3. Replace CIS. 4. DFPU ICP1 conduction check. 5. Replace DSIPB. 6. MFPB F3E conduction check 7. Replace MFPB.

Code: C6754, C6755
Description: • C6754: CIS clamp adjustment failure • C6755: CIS gain adjustment failure
• C6754: After the gain adjustment is performed at the start-up, the CIS clamp adjustment value is too high or too low. • C6755: After the gain adjustment is performed at the start-up, the peak value of the output data is lower than a given value.
Causes: • CIS module (CIS) • Dual scan image processing board (DSIPB) • DF power supply (DFPU) • MFP board (MFPB)
Troubleshooting Guides: 1. Correct the harness connection between CIS J101-DSIPB CN2 if faulty. 2. Correct the harness connection between CIS J102-DFPU CN2 if faulty. 3. Check for possible extraneous light and correct as necessary. 4. Clean the back side reading glass and the shading sheet if dirty. 5. Replace CIS. 6. Replace DSIPB. 7. DFPU ICP1 conduction check. 8. Replace DCPU. 9. MFPB F3E conduction check 10. Replace MFPB.

Code: C6756
Description: CCD power-supply voltage malfunction. Power is not supplied to CCD after the lapse of a given period of time after the main power switch is turned ON or the machine recovers from the sleep mode.
Causes: • CCD board (CCDB) • Scanner drive board (SCDB) • DC power supply unit (DCPU)
Troubleshooting Guides: 1. Correct the harness connection between CCDB PJ5-SCDB CN5 if faulty. 2. Correct the harness connection between SCDB CN1-DCPU CN005 if faulty. 3. Replace the CCD unit. 4. Replace SCDB. 5. Replace DCPU.

Code: C6901, C6902, C6903
Description: • C6901: DSC board mount failure 1 • C6902: DSC Bus check NG1-1 • C6903: DSC Bus check NG1-1
• C6901: When MFP detects that DSC board/1 (front side) is not properly installed. • C6902, C6903: When DSC bus check (front side) detects an error.
Causes: • DSC board/1 (DSCB/1; SC-508) • MFP board (MFPB)
Troubleshooting Guides: 1. Correct the harness connection of DSCB/1 if faulty. 2. Replace DSCB/1. 3. Replace MFPB.

Code: C6911, C6912, C6913
Description: • C6911: DSC board mount failure 2 • C6912: DSC Bus check NG2-1 • C6913: DSC Bus check NG2-2
• C6911: When MFP detects that DSC board/2 (back side) is not properly installed. • C6912, C6913: When DSC bus check (back side) detects an error.
Causes: • DSC board/2 (DSCB/2; SC-508) • Dual scan image processing board (DSIPB) • MFP board (MFPB)
Troubleshooting Guides: 1. Correct the harness connection of DSCB/2 if faulty. 2. Correct the harness connection of DSIPB if faulty. 3. Replace DSCB/2. 4. Replace DSIPB. 5. Replace MFPB.

Code: C6F01
Description: Scanner sequence trouble 1. The original transport interval becomes shorter than the predetermined value due to an original transport control error in original reading in DF.
Causes: • MFP board (MFPB) • DF control board (DFCB)
Troubleshooting Guides: 1. Correct the harness connection between main body and DF if faulty. 2. Replace DFCB. 3. Replace MFPB.

Code: C8101
Description: Before reading pressure welding alienation mechanism trouble. • During a pressure motion being performed, the before read sensor (PS6) output does not change from H to L. • During a retraction motion being performed, the before read sensor (PS6) output does not change from L to H.
Causes: • Reading roller pressure/retraction motor (M6) • Before read sensor (PS6) • DF control board (DFCB)
Troubleshooting Guides: 1. Check the connector between M6-relay CN118-DFCB CN4 for proper connection and correct as necessary. 2. Check the connector of M6 for proper drive coupling and correct as necessary. 3. Check the connector between PS6-relay CN120-DFCB CN11 for proper connection and correct as necessary. 4. PS6 I/O check, sensor check • Control signal: DFCB CN11-2 (ON) • Location of electrical component: DF 1-C 5. M6 load check • Check code: 60 • Multi code: 81, 82 • Control signal: DFCB CN4-1 to 2 • Location of electrical component: DF 10-C 6. Replace M6. 7. DFCB ICP9 conduction check. 8. Replace DFCB.

Code: C8103
Description: Lift up mechanism trouble (Upward movement). The lift up upper sensor (PS2) is not turned ON (unblocked) after a lapse of a given time after the lift-up motor (M5) moves up (is turned forward).
Causes: • Lift-up motor (M5) • Lift up upper sensor (PS2) • DF control board (DFCB)
Troubleshooting Guides: 1. Check the connector between M5-DFCB CN9 for proper connection and correct as necessary. 2. Check the connector of M5 for proper drive coupling and correct as necessary. 3. Check the connector between PS2-DFCB CN6 for proper connection and correct as necessary. 4. PS2 I/O check, sensor check • Control signal: DFCB CN6-3 (ON) • Location of electrical component: DF 7-I 5. M5 load check • Check code: 60 • Multi code: 97, 98 • Control signal: DFCB CN9-1 to 5 • Location of electrical component: DF 5-C 6. Replace M5. 7. DFCB ICP5 conduction check. 8. Replace DFCB.

Code: C8106
Description: Lift up mechanism failure (Downward movement). The lift up lower sensor (PS3) is not turned ON (unblocked) after a lapse of a given time after the lift-up motor (M5) goes down (is turned backward).
Causes: • Lift-up motor (M5) • Lift up lower sensor (PS3) • DF control board (DFCB)
Troubleshooting Guides: 1. Check the connector between M5-DFCB CN9 for proper connection and correct as necessary. 2. Check the connector of M5 for proper drive coupling and correct as necessary. 3. Check the connector between PS3-DFCB CN10 for proper connection and correct as necessary. 4. PS3 I/O check, sensor check • Control signal: DFCB CN10-3 (ON) • Location of electrical component: DF 10-C 5. M5 load check • Check code: 60 • Multi code: 97, 98 • Control signal: DFCB CN9-1 to 5 • Location of electrical component: DF 5-C 6. Replace M5. 7. Replace DFCB.

Code: C8107
Description: Glass cleaning mechanism trouble. The front side cleaning home sensor (PS18) is not turned ON (unblocked) even after the set period of time has elapsed after the front side cleaning motor (M8) turned ON.
Causes: • Front side cleaning motor (M8) • Front side cleaning home sensor (PS18) • DF control board (DFCB)
Troubleshooting Guides: 1. Check the connector between M8-DFCB CN14 for proper connection and correct as necessary. 2. Check the connector between PS18-DFCB CN18 for proper connection and correct as necessary. 3. Check the connector of M8 for proper drive coupling and correct as necessary. 4. PS18 I/O check, sensor check • Control signal: DFCB CN18-3 (ON) • Location of electrical component: DF 3-C 5. M8 load check • Check code: 60 • Multi code: 65, 66, 67 • Control signal: DFCB CN14-1 to 4 • Location of electrical component: DF 6-C 6. Replace M8. 7. DFCB ICP8 conduction check. 8. Replace DFCB.

Code: C8302
Description: Cooling fan motor failure. The motor lock signal remains HIGH for a predetermined continuous period of time while the motor is turning.
Causes: • Cooling fan motor (FM) • DF control board (DFCB)
Troubleshooting Guides: 1. Check the connector between FM-relay CN115-DFCB CN19 for proper connection and correct as necessary. 2. Check the fan for possible overload and correct as necessary. 3. FM load check • Check code: 60 • Multi code: 113 • Control signal: DFCB CN19-3 (LOCK) • Location of electrical component: DF 4-C 4. Replace FM. 5. DFCB ICP10 conduction check. 6. Replace DFCB.

Code: C8401
Description: Nonvolatile memory error. The EEPROM writing is disabled.
Causes: DF control board (DFCB)
Troubleshooting Guides: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Check the DFCB connector for proper connection and correct as necessary. 3. Rewrite the firmware. 4. Replace DFCB.

Code: C8402
Description: Multi feed detection board failure (When UK-501 is installed). • The AD value went below the predetermined the HI side threshold for two consecutive times. • The AD value went above the predetermined the LOW side threshold for two consecutive times.
Causes: • Multi feed detection board/1 (transmitter) (MFDB/1) • Multi feed detection board/2 (receiver) (MFDB/2) • Sensor control board (SCB) • DF control board (DFCB)
Troubleshooting Guides: 1. Remove the film stuck on the window of the lower guide assembly. 2. Use the adjustment sheet for double feed detection kit (UK-501), and select [Service Mode] -> [ADF] -> [Multi-Feed DetectionAdj.]. 3. Use the misdetected paper, and select [Service Mode] -> [ADF] -> [Multi-Feed DetectionAdj.]. 4. Check the connector between MFDB/1-relay CN114-SCB CN104 for proper connection and correct as necessary. 5. Check the connector between MFDB/2-SCB CN103 for proper connection and correct as necessary. 6. Check the connector between SCB CN101-DFCB CN8 for proper connection and correct as necessary. 7. MFDB/1 load check • Check code: 60 • Multi code: 161 • Control signal: SCB CN104 • Location of electrical component: DF 11-L 8. MFDB/2 load check • Check code: 60 • Multi code: 161 • Control signal: SCB CN103 • Location of electrical component: DF 10-J 9. Replace SCB. 10. DFCB ICP11 conduction check. 11. Replace DFCB.

Code: C9401, C9402
Description: • C9401: Exposure LED lighting failure / ROM contents error (MSC) • C9402: Exposure LED lighting abnormally
C9401: • The output from the CCD sensor is a predetermined value or less during CCD sensor gain adjustment. • The wrong model of firmware is detected in the MFP board when the main power switch is turned ON. • The machine type information (Machine, Type) registered to the machine differs from the actual machine type.
C9402: The average output value of the CCD sensor with the scanner at its standby position is a predetermined value or more at the end of a scan job.
Causes: • LED exposure unit • Flat cable (LED exposure unit) • CCD board (CCDB) • Scanner drive board (SCDB) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the machine type information registered and reenter as necessary. For details the machine information, see “Entering the machine type information”. 2. Correct the harness connection between SCDB CN3-LU201 if faulty. 3. Correct the harness connection between SCDB CN2-MFPB CN1E if faulty. 4. Correct the harness connection between CCDB PJ3-MFPB CN9 if faulty. 5. Replace the LED exposure unit. 6. Replace the CCD unit. 7. Replace SCDB. 8. MFPB F3E conduction check 9. Replace MFPB.

Code: C9403, C9404
Description: • C9403: CIS LED lighting failure • C9404: CIS LED lighting abnormally
• C9403: At the CIS gain adjustment, the machine detected that the output of the CIS LED is lower than the specified value. • C9404: After a scan job is completed, the machine detected that the average output of the CIS LED is greater than the specified value.
Causes: • CIS module (CIS) • DF power supply (DFPU) • Dual scan image processing board (DSIPB) • MFP board (MFPB)
Troubleshooting Guides: 1. Correct the harness connection between CIS J101-DSIPB CN2 if faulty. 2. Correct the harness connection between CIS J102-DFPU CN2 if faulty. 3. Replace CIS. 4. DFPU ICP1 conduction check. 5. Replace DCPU. 6. Replace DSIPB. 7. MFPB F3E conduction check 8. Replace MFPB.

Code: CA051, CA052, CA053
Description: • CA051: Standard controller configuration failure • CA052: Controller hardware error • CA053: Controller start failure
• CA051: The controller of the MFP board (MFPB) is faulty. • CA052: A controller hardware error is detected in the network interface. • CA053: A controller start failure is detected in the controller interface.
Causes: MFP board (MFPB)
Troubleshooting Guides: 1. Check to see if [Service Mode] -> [System 2] -> [Image Controller Setting] has been set to “Controller 0.” If changing the setting, turn OFF the main power switch and turn it ON again after 10 seconds or more. 2. Check the connectors of the MFPB for proper connection and correct as necessary. 3. Replace MFPB.

Code: CC002
Description: Vendor internal error. Error occurs inside the vendor.
Causes: • Vendor • MFP board (MFPB)
Troubleshooting Guides: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. Turn OFF and ON the power switch at the vendor side. 2. Check the connector between the vendor-MFPB CN1E for proper connection and correct as necessary. 3. Replace MFPB. 4. Replace the vendor.

Code: CC140
Description: Trouble related to security
Causes:
Troubleshooting Guides: Contact the responsible people of KM before taking some countermeasures.

Code: CC151, CC152
Description: • CC151: ROM contents error upon startup (MSC) • CC152: ROM contents error upon startup (IR)
• CC151: A fault is detected in a sequence of ROM contents check of the MSC during starting. • CC152: A fault is detected in a sequence of ROM contents check of the IR during starting.
Causes: MFP board (MFPB)
Troubleshooting Guides: 1. Check the ROM version. 2. Rewrite the firmware. 3. Replace MFPB.

Code: CC155
Description: Finisher ROM error. Data of flash ROM of the finishing options is determined to be faulty when the main power switch is turned ON.
Causes: FS control board (FSCB)
Troubleshooting Guides: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Rewrite the firmware. 3. Replace FSCB. (FS-536/FS-536SD/FS-537/FS-537SD)

Code: CC156
Description: DF ROM error. Data of flash ROM of the DF is determined to be faulty when the main power switch is turned ON.
Causes: DF control board (DFCB)
Troubleshooting Guides: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Rewrite the firmware. 3. Replace DFCB.

Code: CC159, CC15A
Description: • CC159: ROM contents error upon startup (DSC1) • CC15A: ROM contents error upon startup (DSC2)
A fault is detected in a sequence of ROM contents check of the DSC board during starting.
Causes: • DSC board/1 (DSCB/1; SC-508) • DSC board/2 (DSCB/2; SC-508)
Troubleshooting Guides: 1. Check DSCB/1 or DSCB/2 connector for proper connection and correct as necessary. 2. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 3. Rewrite the firmware. 4. Replace DSCB/1 or DSCB/2.

Code: CC15B
Description: Flash ROM error (saddle). <When FS-536SD or FS-537SD is installed> Data of flash ROM of the saddle is determined to be faulty when the main power switch is turned ON.
Causes: SD control board (SDCB)
Troubleshooting Guides: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Rewrite the firmware. 3. Replace SDCB. (FS-536SD/FS-537SD)

Code: CC163
Description: ROM contents error (PRT). The wrong model of firmware is detected in the engine during the initial connection to the engine is being checked.
Causes: • eMMC board (eMMCB) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the connectors on MFPB for proper connection and correct as necessary. 2. Check the version of the firmware with Firmware Version. 3. Rewrite the firmware. 4. Replace eMMCB. 5. If the above actions do not solve the problem, contact KM.

Code: CC164
Description: ROM contents error (MSC). • The wrong model of firmware is detected in the MFP board when the main power switch is turned ON. • The machine type information (Machine, Type) registered to the machine differs from the actual machine type.
Causes: • eMMC board (eMMCB) • MFP board (MFPB)
Troubleshooting Guides: 1. Check the ROM version. 2. Check the machine type information registered and reenter as necessary. For details the machine information, see “Entering the machine type information”. 3. Rewrite the firmware. 4. Replace eMMCB.

Code: CC170 … CC186
Description: • CC170: Dynamic link error during starting (AP0) • CC171: Dynamic link error during starting (AP1) • CC172: Dynamic link error during starting (AP2) • CC173: Dynamic link error during starting (AP3) • CC174: Dynamic link error during starting (AP4) • CC180: Dynamic link error during starting (LDR) • CC181: Dynamic link error during starting (IBR) • CC182: Dynamic link error during starting (IID) • CC183: Dynamic link error during starting (IPF) • CC184: Dynamic link error during starting (IMY) • CC185: Dynamic link error during starting (SPF) • CC186: Dynamic link error during starting (OAP)
A dynamic link error occurs in the program on the MFP board due to an insufficient memory space available, a ROM fault, or other reason when the main power switch is turned ON.
Causes: MFP board (MFPB)
Troubleshooting Guides: 1. If the malfunction code “CC172” has occurred, access [Service Mode] -> [System 2] -> [Image Controller Setting] and check to see if “Controller 2,” “Controller 3,” or “Others” is set for [Image Controller Setting]. If any of these is set, according to the kind of controller, select “Controller 0” or “Controller 1.” 2. If the malfunction code ‘CC180’ has occurred, check to install the appropriate loadable device driver for an authentication unit which is installed to the MFP. When the appropriate loadable device driver is not installed, reinstall the appropriate loadable device driver. 3. Replace MFPB. 4. If the above actions do not solve the problem, contact KM.

Code: CC190
Description: Outline font load error. An error occurred while loading the outline font.
Causes: • MFP board (MFPB) • Hard disk (A) (HDD (A)) • Hard disk (B) (HDD (B): HD-524)
Troubleshooting Guides: 1. Check the connector between hard disk (A)-MFPB CN8, CN10 for proper connection and correct as necessary. 2. Check the connector between hard disk (B)-MFPB CN7, CN11 for proper connection and correct as necessary. 3. Carry out the [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Format]. 4. Replace the hard disk. (HDD (A) / HDD (B)) 5. Replace MFPB.

Code: CC191
Description: Setting parameter load error (LDR). Upon startup, the processing of the loadable device driver setting data file failed. • RAM disk file creation failed. • Reading from the flash ROM failed. • An error occurred in API of the authentication module.
Causes: MFP board (MFPB)
Troubleshooting Guides: 1. Turn OFF the main power switch, wait for 10 sec., then turn the switch ON. 2. Reinstall the loadable device driver. 3. Rewrite the firmware. 4. Replace MFPB.

Code: CC211
Description: Authentication device general error. When using the authentication device, authentication data is not to meet the specifications.
Causes: • MFP board (MFPB) • Authentication unit
Troubleshooting Guides: 1. Check the USB cable for proper connection. Reconnect the USB cable as necessary. 2. Turn OFF the main power switch, wait for 10 sec. or more, and turn ON the main power switch.

Code: CC212
Description: User validation error. • An error occurred while validating the user authentication information. • The loadable device driver is not successfully installed.
Causes: • MFP board (MFPB) • Authentication unit
Troubleshooting Guides: 1. When this trouble code is generated after installing the loadable device driver, check to see if there is any file other than loadable device driver in USB memory used. If there is any file, reinstall the loadable device driver. 2. Check the USB cable for proper connection. Reconnect the USB cable as necessary. 3. Turn OFF the main power switch, wait for 10 sec. or more, and turn ON the main power switch. 4. Re-register the user authentication information. 5. Replace the authentication unit.

Code: CC213
Description: User registration error/Card information setting error. • IC card advanced settings data is not correct when starting-up the authentication device. • Authentication information data is not correct when starting-up the authentication device. • IC card advanced settings data is not correct when setting the IC card advanced settings. • Authentication information data is not correct when setting the IC card advanced settings. • IC card advanced settings data is not correct when registering the authentication information. • Authentication information data is not correct when registering the authentication information. • IC card advanced settings data is not correct when editing the authentication information. • Authentication information data is not correct when editing the authentication information.
Causes: • MFP board (MFPB) • Authentication unit
Troubleshooting Guides: 1. Check the USB cable for proper connection. Reconnect the USB cable as necessary. 2. Turn OFF the main power switch, wait for 10 sec. or more, and turn ON the main power switch. 3. Reset the authentication settings. (card type, IC card advanced settings, and etc.) 4. Re-register the user authentication information.

Code: CC214
Description: User information deletion error. The deletion of the user information is uncompleted.
Causes: • MFP board (MFPB) • Authentication unit
Troubleshooting Guides: 1. Check the USB cable for proper connection. Reconnect the USB cable as necessary. 2. Turn OFF the main power switch, wait for 10 sec. or more, and turn ON the main power switch.

Code: CC216
Description: Acquisition failure of the number of trials/Initialize error of number of authentication. An error occurred during user authentication using optional authentication unit AU-102.
Causes: • MFP board (MFPB) • Authentication unit
Troubleshooting Guides: 1. Check the USB cable for proper connection. Reconnect the USB cable as necessary. 2. Turn OFF the main power switch, wait for 10 sec. or more, and turn ON the main power switch. 3. Reset the number of authentication trials.

Code: CC301
Description: Authentication customize data error. • The master authentication customize data is corrupted upon startup. • Registration of authentication customize data in the main body has failed upon startup.
Causes: MFP board (MFPB)
Troubleshooting Guides: 1. Reinstall the authentication customize data. 2. Rewrite the firmware. 3. Replace MFPB.

Code: CC302
Description: Authentication customize data version mismatch error. The authentication customize data version is later than the firmware version of the machine.
Causes: MFP board (MFPB)
Troubleshooting Guides: 1. Rewrite the main body firmware with the latest one and reinstall the authentication customize data. 2. Replace MFPB.

Code: CCC00
Description: Public user account track information error. At the first time of startup, the nonvolatile status is reset incompletely due to any trouble (such as a shut off of the main power).
Causes: eMMC board (eMMCB)
Troubleshooting Guides: 1. Replace eMMCB.

Code: CD002
Description: JOB RAM save error. The error in save of job data to the memory/ hard disk and its read error are detected.
Causes: • MFP board (MFPB) • Hard disk (A) (HDD (A)) • Hard disk (B) (HDD (B): HD-524)
Troubleshooting Guides: 1. Check the connector between hard disk (A)-MFPB CN8, CN10 for proper connection and correct as necessary. 2. Check the connector between hard disk (B)-MFPB CN7, CN11 for proper connection and correct as necessary. 3. Carry out the [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Format]. 4. Replace the hard disk. (HDD (A) / HDD (B)) 5. Replace MFPB.

Code: CD004, CD00F, CD020
Description: • CD004: Hard disk access error (connection failure) • CD00F: Hard disk data transfer error • CD020: Hard disk verify error
• CD004: Unable to communicate between the hard disk and MFP board (MFPB). • CD00F: Data transfer from the hard disk is faulty. • CD020: The data abnormality is detected by the hard disk verify check.
Causes: • MFP board (MFPB) • Hard disk (A) (HDD (A)) • Hard disk (B) (HDD (B): HD-524)
Troubleshooting Guides: 1. Check the connector between hard disk (A)-MFPB CN8, CN10 for proper connection and correct as necessary. 2. Check the connector between hard disk (B)-MFPB CN7, CN11 for proper connection and correct as necessary. 3. Reinstall the hard disk. 4. Replace the hard disk. (HDD (A) / HDD (B)) 5. Replace MFPB.

Code: CD010
Description: Hard disk unformat. Unformatted hard disk is connected.
Causes: • MFP board (MFPB) • Hard disk (A) (HDD (A)) • Hard disk (B) (HDD (B): HD-524)
Troubleshooting Guides: 1. Carry out the [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Format]. 2. Replace the hard disk. (HDD (A) / HDD (B)) 3. Replace MFPB.

Code: CD011
Description: Hard disk out of specifications mounted. A hard disk that falls outside the specifications is connected.
Causes: • Hard disk (A) (HDD (A)) • Hard disk (B) (HDD (B): HD-524)
Troubleshooting Guides: 1. Check the hard disk specifications. 2. Replace the hard disk. (HDD (A) / HDD (B))

Code: CD012
Description: Mount error due to hard disk being unformatted. • The hard disk is not logically formatted after the whole data in the hard disk has been deleted by overwriting. • The hard disk that has replaced an old one is not logically formatted.
Causes: • Hard disk (A) (HDD (A)) • Hard disk (B) (HDD (B): HD-524)
Troubleshooting Guides: 1. Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Format] -> [Logical Format] and perform the function. Then, rewrite the firmware. 2. Replace the hard disk. (HDD (A) / HDD (B))

Code: CD013, CD014
Description: CD013: HDD mirroring error master CD014: HDD mirroring error slave
CD013: A R/W error occurs in the master drive during mirroring. CD014: A R/W error occurs in the slave drive during mirroring.
Causes: • Hard disk (A) (HDD (A)) • Hard disk (B) (HDD (B): HD-524)
Troubleshooting Guides: 1. Turn OFF the main power switch, wait for 10 sec., then turn the switch ON. 2. Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Status] and identify the specific hard disk that has developed the error. If an error occurs, ‘Error’ appears in the status column. 3. Replace the hard disk that has developed the error with a new one. (HDD (A) / HDD (B)) 4. Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [HDD Mirroring Rebuild] and perform the function.

Code: CD015
Description: HDD mirroring error master slave. A R/W error occurs in both drives during mirroring.
Causes: • Hard disk (A) (HDD (A)) • Hard disk (B) (HDD (B): HD-524)
Troubleshooting Guides: 1. Turn OFF the main power switch, wait for 10 sec., then turn the switch ON. 2. Replace both hard disk (A) and hard disk (B) with new ones. (HDD (A) / HDD (B)) 3. Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Format] -> [Physical Format] and perform the function. 4. Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Format] -> [Logical Format] and perform the function. 5. If HDD Data Backup has previously been performed, select [Service Mode] -> [Enhanced Security] -> [HDD Data Backup] -> [Restore] and perform the function. 6. If HDD Data Backup has not been performed previously, install voice data, etc.

Code: CD016
Description: HDD mirroring error master (rebuild). A R/W error occurs in the master drive during HDD Mirroring Rebuild.
Causes: • Hard disk (A) (HDD (A)) • Hard disk (B) (HDD (B): HD-524)
Troubleshooting Guides: 1. Turn OFF the main power switch, wait for 10 sec., then turn the switch ON. If no problems are encountered, HDD Mirroring Rebuild is automatically performed. 2. Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Status] and identify the specific hard disk that has developed the error. If an error occurs, ‘Error’ appears in the status column. 3. Replace the hard disk that has developed the error with a new one. (HDD (A) / HDD (B)) 4. Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Format] -> [Physical Format] and perform the function. 5. Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Format] -> [Logical Format] and perform the function. 6. If HDD Data Backup has previously been performed, select [Service Mode] -> [Enhanced Security] -> [HDD Data Backup] -> [Restore] and perform the function. 7. If HDD Data Backup has not been performed previously, install voice data, etc.

Code: CD017
Description: HDD mirroring error slave (rebuild). A R/W error occurs in the slave drive during HDD Mirroring Rebuild.
Causes: • Hard disk (A) (HDD (A)) • Hard disk (B) (HDD (B): HD-524)
Troubleshooting Guides: 1. Turn OFF the main power switch, wait for 10 sec., then turn the switch ON. If no problems are encountered, HDD Mirroring Rebuild is automatically performed. 2. Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Status] and identify the specific hard disk that has developed the error. If an error occurs, ‘Error’ appears in the status column. 3. Replace the hard disk that has developed the error with a new one. (HDD (A) / HDD (B)) 4. Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [HDD Mirroring Rebuild] and perform the function.

Code: CD030
Description: Hard disk management information reading error. The machine fails to read administrative information data saved in the hard disk.
Causes: • Hard disk (A) (HDD (A)) • Hard disk (B) (HDD (B): HD-524)
Troubleshooting Guides: 1. Check the connector between hard disk (A)-MFPB CN8, CN10 for proper connection and correct as necessary. 2. Check the connector between hard disk (B)-MFPB CN7, CN11 for proper connection and correct as necessary. 3. Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Format] -> [Logical Format] and perform the function. 4. Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Format] -> [Physical Format] and perform the function. 5. Replace the hard disk. (HDD (A) / HDD (B))

Code: CD041 … CD046
Description: HDD command execution error. The error occurred inside the hard disk.
Causes: • Hard disk (A) (HDD (A)) • Hard disk (B) (HDD (B): HD-524)
Troubleshooting Guides: 1. Check the hard disk specifications. 2. Carry out the [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Format]. 3. Replace the hard disk. (HDD (A) / HDD (B))

Code: CD047 … CD04B
Description: HDD SCSI library error. The error occurred inside the hard disk.
Causes: • Hard disk (A) (HDD (A)) • Hard disk (B) (HDD (B): HD-524)
Troubleshooting Guides: 1. Check the hard disk specifications. 2. Carry out the [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Format]. 3. Replace the hard disk. (HDD (A) / HDD (B))

Code: CD050
Description: Hard disk recovery timeout. The hard disk fails to recover from the power save mode within the predetermined period of time.
Causes: • MFP board (MFPB) • Hard disk (A) (HDD (A)) • Hard disk (B) (HDD (B): HD-524)
Troubleshooting Guides: 1. Check the connector between hard disk (A)-MFPB CN8, CN10 for proper connection and correct as necessary. 2. Check the connector between hard disk (B)-MFPB CN7, CN11 for proper connection and correct as necessary. 3. Reinstall the hard disk. 4. Carry out the [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Format]. 5. Replace the hard disk. (HDD (A) / HDD (B))

Code: CD110
Description: Wireless LAN destination initialization error. When an initialization error occurred on the settings of the wireless LAN in the upgrade kit (UK-212/UK-215).
Causes: 1. Check the UK-212 or UK-215 connector for proper connection and correct as necessary. 2. Rewrite the firmware. 3. Replace UK-212 or UK-215.
Troubleshooting Guides:

Code: CD201, CD202, CD203
Description: • CD201: File memory mounting error • CD202: Memory capacity discrepancy • CD203: Memory capacity discrepancy 2
CD201: • The file memory is not mounted. • The file has any abnormality.
CD202: • File memory capacity on the MFP board (MFPB) is not enough. • File memory capacity necessary for duplex printing is not enough.
CD203: File memory capacity on the MFP board (MFPB) is not enough.
Causes: MFP board (MFPB)
Troubleshooting Guides: 1. Replace MFPB.

Code: CD211, CD212
Description: • CD211: PCI-SDRAM DMA operation failure • CD212: Compression/extraction timeout detection
• CD211: Hardware related to the transfer of memory image of the MFP board (MFPB) fails to respond. • CD212: Hardware related to the BTC compression function of the MFP board (MFPB) fails to respond.
Causes: MFP board (MFPB)
Troubleshooting Guides: 1. Replace MFPB.

Code: CD241, CD242
Description: • CD241: Encryption ASIC setting error • CD242: Encryption ASIC mounting error
• CD241: Initialization error of the encrypted ASIC is detected during the machine is starting. • CD242: The faulty of the installation of encrypted ASIC is detected during the machine is starting.
Causes: MFP board (MFPB)
Troubleshooting Guides: 1. Check the MFP board connector for proper connection and correct as necessary. 2. Replace MFPB.

Code: CD252
Description: No relay board for IC-418 mounting at IC-418 mount setting. EFI relay circuit boards (EFIRYB: VI-510) are not mounted when the IC-418 is set to mount setting at Service Mode.
Causes: • MFP board (MFPB) • EFI relay board (EFIRYB: VI-510)
Troubleshooting Guides: 1. If the IC-418 is not mounted, access [Service Mode] -> [System 2] -> [Image Controller Setting] and check to see if “Controller 0” is set for [Image Controller Setting]. 2. Check EFIRYB for proper connection and correct as necessary. 3. Replace EFIRYB. 4. Replace MFPB.

Code: CD261
Description: USB hub board failure. • When a failure is detected in USB hub board included in the local interface kit. • Non-standard USB device is connected.
Causes: • MFP board (MFPB) • USB hub board (USBHB: EK-610/EK-611)
Troubleshooting Guides: 1. Check the operation with another USB device. 2. Check the USB hub board connector for proper connection and correct as necessary. 3. Replace the USB hub board. 4. Replace MFPB.

Code: CD262
Description: Extension network adapter installation error. • When the 2nd network card settings is set to “Set” but the upgrade kit (UK-212/UK-215) is not installed. • Upgrade Kit (UK-212/UK-215) is faulty.
Causes:
Troubleshooting Guides: 1. Check the settings of [Service Mode] -> [Network Settings] -> [2nd Network Setting] -> [2nd network card settings]. 2. Check the UK-212 or UK-215 connector for proper connection and correct as necessary. 3. Rewrite the firmware. 4. Replace UK-212 or UK-215.

Code: CD271
Description: The memory cannot be recognized with the i-Option activated. While the i-Option is activated, the memory on an MFPB cannot be recognized.
Causes: MFP board (MFPB)
Troubleshooting Guides: 1. Check MFPB for proper connection and correct as necessary. 2. Replace MFPB.

Code: CD272
Description: i-Option activated and HDD not installed. While the i-Option is activated, the hard disk is not installed.
Causes: • MFP board (MFPB) • Hard disk (A) (HDD (A))
Troubleshooting Guides: 1. Access [Service Mode] -> [System 2] -> [HDD] and check to see if “Installed” is selected. 2. Replace the hard disk (A). 3. Replace MFPB.

Code: CD313
Description: TPM key data error. A fault occurs in the TPM key data.
Causes:
Troubleshooting Guides: 1. Touch [Recover Data] displayed at the lower right portion on the trouble screen. 2. A screen confirming whether to recover data appears. 3. Select [Yes]. 4. The screen will be shifted to the data restoration screen to perform data restoration. NOTE . When the restoration is performed in a short time, data restoration screen may not be displayed. 5. Check the message which indicates that the data restoration was successfully conducted. Turn OFF the main power switch and turn it ON again more than 10 seconds after. NOTE . In case it failed to restore data, return to the trouble code screen. 6. Replace the current MFPB with a new one. NOTE . Nonvolatile data backup will be automatically performed every hour. Backup can also be performed manually with the following setting. [Service Mode] -> [Enhanced Security] -> [Memory Data Backup]

Code: CD38E
Description: Nonvolatile data save error (SPI-Flash). The ‘ISW download flag’ saved in the SPI-Flash has an illegal value.
Causes: MFP board (MFPB)
Troubleshooting Guides: 1. Rewrite the firmware. 2. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch.

Code: CD3C0
Description: New board detection. The board is replaced with a new one.
Causes:
Troubleshooting Guides: 1. Wait until “Recover Data” appears. (MFP will reboot maximum 2 times by itself, it may take 5 minutes.) Touch the “Recover Data” button and follow the instructions that appear on the control panel to restore (backup) data.

Code: CD401 … CD413
Description: • CD401: NACK command incorrect • CD402: ACK command incorrect • CD403: Checksum error • CD404: Receiving packet incorrect • CD405: Receiving packet analysis error • CD406: ACK receiving timeout • CD407: Retransmission timeout • CD411: Touch panel board error • CD412: Touch panel type mismatch • CD413: Electrostatic touch panel operation mode error.
When abnormality is found in the communication of controller.
Causes: MFP board (MFPB)
Troubleshooting Guides: 1. Check whether there is a strong electromagnetic noise source near the main body. 2. Check the connectors on MFPB for proper connection and correct as necessary. 3. Replace MFPB.

Code: CD601, CD602, CD603
Description: Trouble related to security.
Causes:
Troubleshooting Guides: 1. Turn OFF the main power switch, wait for 10 sec. or more, and turn ON the main power switch. If the above actions do not solve the problem, contact KM.

Code: CD701, CD702, CD703
Description: • CD701: Mechanical controller flash ROM writing error • CD702: Mechanical controller flash ROM device error • CD703: FW download communication fault
CD701: A mechanical controller flash ROM writing sequence is interrupted in its mid-operation due to, for example, power being shut off. CD702: An erase error or other device fault occurs during mechanical controller flash ROM writing. CD703: • Irregular data is received during FW downloading. • Places are changed in the order of write completion pulses. • A write completion pulse is received for a memory for which binary writing is not permitted. • Final checksum mismatch in FW download • Two-minute timeout (no response from CTL, the number of transfer data items less than the specified)
Causes: MFP board (MFPB)
Troubleshooting Guides: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Rewrite the firmware. 3. Replace MFPB.

Code: CD704
Description: Finisher Flash ROM device error (When FS-536, FS-536SD, FS-537, or FS-537SD is installed). An erase error or other device fault occurs during the finisher flash ROM writing.
Causes: FS control board (FSCB)
Troubleshooting Guides: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Rewrite the firmware. 3. Replace FSCB. (FS-536/FS-536SD/FS-537/FS-537SD)

Code: CD705, CD706
Description: • CD705: Mechanical controller sub-CPU flash ROM device error • CD706: Mechanical controller sub-CPU flash ROM error
• CD705: An erase error or other device fault occurs during mechanical controller sub-CPU flash ROM writing. • CD706: A data error is determined to exist in the mechanical controller sub-CPU flash ROM during starting.
Causes: MFP board (MFPB)
Troubleshooting Guides: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Rewrite the firmware. 3. Replace MFPB.

Code: CDF50, CDF70, CDFA0
Description: • CDF50: ASIC image version failure • CDF70: ASIC image access failure • CDFA0: ASIC image error.
Communication error is detected between the MFP board (MFPB) and the CCD board (CCDB).
Causes: • MFP board (MFPB) • CCD board (CCDB)
Troubleshooting Guides: 1. Check the connector between MFPB CN9-CCDB PJ3 for proper connection and correct as necessary. 2. Update the firmware. 3. Replace the CCD unit. 4. Replace MFPB.

Code: CDF51, CDF71, CDFA1
Description: • CDF51: ASIC image version failure (back side) • CDF71: ASIC image access failure (back side) • CDFA1: ASIC image error (back side)
Communication error is detected between the MFP board (MFPB) and the dual scan image processing board (DSIPB).
Causes: • MFP board (MFPB) • Dual scan image processing board (DSIPB)
Troubleshooting Guides: 1. Check the connector between MFPB CN24-DSIPB CN1 for proper connection and correct as necessary. 2. Update the firmware. 3. Replace DSIPB. 4. Replace MFPB.

Code: CE001 … CE009
Description: • CE001: Abnormal message queue • CE003: Task error • CE004: Event error • CE005: Memory access error • CE006: Header access error • CE007: DIMM initialize error • CE009: Memory resource shortage error.
MFP board (MFPB) is faulty.
Causes: MFP board (MFPB)
Troubleshooting Guides: 1. Check the connectors on MFPB for proper connection and correct as necessary. 2. Replace MFPB.

Code: CE002
Description: Message and method parameter failure. MFP board (MFPB) is faulty.
Causes: • MFP board (MFPB) • Hard disk (A) (HDD (A)) • Hard disk (B) (HDD (B): HD-524)
Troubleshooting Guides: 1. Turn OFF the main power switch and turn it ON again, and conduct the following setting. [Service Mode] -> [System 1] -> [Initialization] – > [Clear All Data]. 2. Carry out the [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Format]. 3. Replace the hard disk. (HDD (A) / HDD (B)) 4. Replace MFPB.

Code: CE101
Description: Browser finish detected. • The browser is automatically recovered (restarted) after the main body detected that the browser (separate process) has stopped with fault. • When the “Malfunction finish is detected over predetermined number of times” or “the browser task process is except in idle (printing, etc)”.
Causes: MFP board (MFPB)
Troubleshooting Guides: 1. Check the connectors on MFPB for proper connection and correct as necessary. 2. Replace MFPB.

Code: CE201
Description: Transmission operation log storage fault. When the transmission log storage failed, it repeats retrial until transmission operation log is stored. The trouble is detected when the retrial failed for predetermined number of times.
Causes: MFP board (MFPB)
Troubleshooting Guides: 1. Check the connectors on MFPB for proper connection and correct as necessary. 2. Replace MFPB.

Code: CE202
Description: PDL interpreter error. An error inside the EEPROM is detected during converting the PDL information.
Causes: MFP board (MFPB)
Troubleshooting Guides: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Format] -> [Logical Format] and perform the function. 3. Select [System 1] -> [Initialization] -> [Clear All Data] and perform the function. 4. Replace MFPB.

Code: CE203
Description: Unrecoverable error. An error does not recover even after an auto recovery.
Causes: MFP board (MFPB)
Troubleshooting Guides: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Format] -> [Logical Format] and perform the function. 3. Select [System 1] -> [Initialization] -> [Clear All Data] and perform the function. 4. Update the firmware. 5. Perform the self-diagnostic function (from main power switch ON). 6. Replace MFPB.

Code: CE301 … CE305
Description: • CE301: Referring incorrect memory • CE302: Incorrect command • CE303: Finished due to error inside Qt library • CE304: Finished due to error outside Qt library • CE305: Program forced to stop.
Error occurred with the process inside the MFP controller.
Causes: MFP board (MFPB)
Troubleshooting Guides: 1. Check the connectors on MFPB for proper connection and correct as necessary. 2. Replace MFPB. 3. Acquire the debug logs in [Service Mode] -> [Debug Settings] and analyze them.

Code: CE401
Description: Shared memory connection timeout. A CPU communication error is detected when power save is turned ON.
Causes: MFP board (MFPB)
Troubleshooting Guides: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Rewrite the firmware. 3. Replace MFPB.

Code: CED01
Description: The authentication application information does not exist in the hard disk/eMMC board in the enhanced server authentication state.
With “Enhanced Server Authentication” set, no authentication application registration information is found in the hard disk or the eMMC board (eMMCB).
Causes: • eMMC board (eMMCB) • Hard disk (A) (HDD (A)) • Hard disk (B) (HDD (B): HD-524)
Troubleshooting Guides: 1. Turn OFF and ON the main power switch. 2. Check the connector between hard disk (A)-MFPB CN8, CN10 for proper connection and correct as necessary. 3. Check the connector between hard disk (B)-MFPB CN7, CN11 for proper connection and correct as necessary. 4. Check the connector from eMMCB to MFPB for proper connection and correct as necessary. 5. Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Format] -> [Logical Format] and perform the function. 6. Replace the hard disk. (HDD (A) / HDD (B)) 7. If the above actions do not solve the problem, contact KM.

Code: CEEE1, CEEE3
Description: • CEEE1: MFP board (MSC) malfunction • CEEE3: MFP board (ENG) malfunction
MFP board (MFPB) is faulty.
Causes: MFP board (MFPB)
Troubleshooting Guides: 1. Check the connectors on MFPB for proper connection and correct as necessary. 2. Replace MFPB.

Code: CEEE2
Description: Scanner section malfunction. A scanner part is faulty.
Causes: • LED exposure unit • CCD board (CCDB) • Scanner drive board (SCDB)
Troubleshooting Guides: 1. Correct the connector connection between CCDB and MFPB if faulty. 2. Replace SCDB. 3. Replace the CCD unit.

Code: CF###
Description: Abort code
Causes:
Troubleshooting Guides: • The machine displays an abort code (CF###) on the control panel as it becomes unable to process tasks properly through its software control. • When the system program is aborted, check the electrical component, unit, option, and connection relating to the specific type of the abort condition.

Code: D-1
Description: Split line detect (front side). • While recovering from the power save mode or when the main power switch and power key are ON, it detects whether or not stain exist at the original reading glass when the DF is closed. This warning will be displayed if the original is set to DF when stain exist. • The thin line detection level and the warning display can be changed by [Service Mode] -> [System 2] -> [ADF Scan Glass Contamin. Set.] -> [Front Side].
Causes: • Front side cleaning motor (M8) • Front side cleaning home sensor (PS18) • DF control board (DFCB)
Troubleshooting Guides: 1. Wipe clean the glass surface of the original reading glass. 2. Check the front side glass cleaning roller unit for proper installation and correct if necessary. Clean the front side glass cleaning roller unit if dirty. 3. Select [Service Mode] -> [System 2] ->[ADF Scan Glass Contamin. Set.] -> [Front Side], and change the setting. 4. Check the DFCB connector for proper connection and correct as necessary. 5. M8 operation check 6. Replace the front side glass cleaning roller unit. 7. Replace DFCB.

Code: D-3
Description: Split line detect (back side). • While recovering from the power save mode or when the main power switch and power key are ON, it detects whether or not stain exist at the back side original scanning section (CIS) when the DF is closed. This warning will be displayed if the original is set to DF when stain exist. • The thin line detection level and the warning display can be changed by [Service Mode] -> [System 2] -> [ADF Scan Glass Contamin. Set.] -> [Back Side].
Causes: • CIS module (CIS) • DF power supply (DFPU) • Dual scan image processing board (DSIPB)
Troubleshooting Guides: 1. Wipe clean the CIS glass surface. 2. Check the back side glass cleaning roller unit for proper installation and correct if necessary. Clean the back side glass cleaning roller unit if dirty. 3. If there is a problem in the CIS module connection, correct the faulty connection. 4. Replace CIS. 5. Replace DCPU. 6. Replace DSIPB.

Code: P-14
Description: Skew correction trouble. The difference between the skew default position setting value and the cumulative amount of skew adjustment values goes over the predetermined value.
Causes: • IDC sensor/Fr (IDCS/Fr) • IDC sensor/Rr (IDCS/Rr) • PH relay board (PHRYB) • MFP board (MFPB) • PH unit • Imaging unit/Y,M,C • Drum unit/K
Troubleshooting Guides: 1. Check the drive transmission portion of the imaging unit and correct as necessary. 2. Clean the contact of the imaging unit connector if dirty. 3. Reinstall or reconnect IDCS/Fr, connectors connecting between IDCS/Fr-relay CN228-MFPB CN32E, and the sensor shutter, if any of the foregoing parts is installed or connected improperly. 4. Reinstall or reconnect IDCS/Rr, connectors connecting between IDCS/Rr-relay CN228-MFPB CN32E, and the sensor shutter, if any of the foregoing parts is installed or connected improperly. 5. Clean IDCS/Fr or IDCS/Rr if it is dirty. 6. Replace IDCS/Fr or IDCS/Rr. 7. Replace the imaging unit/Y,M,C. 8. Replace the drum unit/K. 9. Replace the PH unit. 10. PHRYB ICP3 conduction check. 11. Replace PHRYB. 12. MFPB F3E, F12E, or F13E conduction check 13. Replace MFPB. NOTE . After the PH unit is replaced, reset the skew default position for each color in [Service Mode] -> [Machine] -> [Print Head Skew Adj.] -> [Print Head Skew Adj.] . When this alert code is displayed, according to the list, take actions to address the problem. After the problem is resolved, select [Service Mode] -> [Machine] -> [Print Head Skew Adj.] -> [Print Head Skew Reset] and perform the skew adjustment reset.

Code: P-21
Description: Color regist test pattern failure. • During pre-pattern detection, pre-pattern edge (start/ end point of effective area) is not detected within the pre-pattern search area. • During detection of regist pattern at vertical/horizontal direction, pattern edge (start/end point of effective area) is not detected within the pattern search area of each unit.
Causes: • Transfer belt unit • PH unit • PH relay board (PHRYB) • MFP board (MFPB)
Troubleshooting Guides: 1. Wipe clean the surface of the transfer belt with a soft cloth, if it is dirty. 2. Replace the transfer belt unit if the transfer belt is damaged. 3. Replace the PH unit. 4. PHRYB ICP3 conduction check. 5. Replace PHRYB. 6. MFPB F3E conduction check 7. Replace MFPB.

Code: P-22
Description: Color regist adjust failure. • The gap between maximum and minimum value of deviations among each color (the values before averaging) is over the predetermined value. • Average deviation exceeds the predetermined value. • In case the final value of the deviation after stabilization exceeds the predetermined value, it is regarded as failure even if the average deviation is within tolerance.
Causes: • IDC sensor/Fr (IDCS/Fr) • IDC sensor/Rr (IDCS/Rr) • IDC sensor shutter solenoid (SD2) • MFP board (MFPB)
Troubleshooting Guides: 1. Slide out the imaging unit and reinstall it in position. 2. Reinstall or reconnect IDCS/Fr, connectors connecting between IDCS/Fr-relay CN228-MFPB CN32E, and the sensor shutter, if any of the foregoing parts is installed or connected improperly. 3. Reinstall or reconnect IDCS/Rr, connectors connecting between IDCS/Rr-relay CN228-MFPB CN32E, and the sensor shutter, if any of the foregoing parts is installed or connected improperly. 4. Check the vertical transport guide for installed position and correct as necessary. 5. Check the connector between SD2-relay CN551-relay CN228-MFPB CN19E for proper connection. 6. Check that the IDC sensor shutter opens and closes properly. 7. MFPB F3E conduction check 8. Replace MFPB.

Code: P-27
Description: Secondary transfer ATVC failure. An abnormal average value is detected during an adjustment of the second transfer ATVC value.
Causes: • High voltage unit/2 (HV2) • MFP board (MFPB) • Image transfer entrance guide • 2nd transfer assy • Transfer belt unit
Troubleshooting Guides: 1. Check the contact between the roller opposed to the 2nd transfer roller in the transfer belt unit and the grounding terminal. Clean the joint or correct if necessary. 2. Check the image transfer entrance guide for proper installation and correct if necessary. 3. Check that the spring does not come off during the pressure operation of the transfer roller and correct if necessary. 4. Check the contact at the joint of the 2nd transfer assy and HV2. Clean the joint or correct if necessary. 5. Replace the transfer belt unit. 6. Replace HV2. 7. MFPB F12E conduction check 8. Replace MFPB.

Code: P-31
Description: Encoder sensor malfunction. While the PC motor/K is rotating at a stable pace and lock signals are in an active (LOW=0) condition, an abnormal encoder pulse width continues to be detected over the predetermined period of time.
Causes: • Encoder sensor/K1 (PS44) • Encoder sensor/K2 (PS45) • Transport drive assy • MFP board (MFPB)
Troubleshooting Guides: 1. Perform the faulty sensor check procedure. * 2. Check the sensor, for which a faulty condition has been checked, for installed position and proper connector connection. 3. Wipe the sensor, for which a faulty condition has been checked, clean of dirt if any. 4. If P-31 persists, change the transport drive assy. 5. Replace MFPB. *: Faulty sensor check procedure 1. Open the lower front door and turn on the main power switch. 2. Display [Service Mode] -> [State Confirmation] -> [Sensor Check]. 3. Close the lower front door and start [Stabilizer]. 4. During the stabilizer sequence, check to see if the values of the phase detection sensors (encoder sensor/K1 and encoder sensor/K2) change. 5. A sensor is faulty if its value does not change.

Code: P-32
Description: Heating roller temperature sensor/1 temperature detection failure. • During warm up, the temperature detected by the heating roller thermistor/1 exceeded the warm up complete temperature of the heating roller for over the predetermined value, and stayed for a predetermined period of time. • When the predetermined period of time had passed after the warm up became complete, detected temperature of the heating roller thermistor/1 exceeded the temperature detected by the heating roller temperature sensor/1 for over the predetermined value for more than the predetermined period of time. • While printing, temperature detected by the heating roller thermistor/1 exceeded the temperature detected by the heating roller temperature sensor/1 for more than the predetermined value for a predetermined period of time. • This warning indicates that condensation or dirt on the heating roller temperature sensor/1 was detected, and the alternate temperature control is being conducted. With condensation, the warning is cleared when the condensation is detected to be removed. When the dirt on the sensor is detected, it is considered as a failure and the trouble code C-392A is issued.
Causes: • Fusing unit • Heating roller thermistor/1 (TH1) • Heating roller temperature sensor/1 (TEMS1)
Troubleshooting Guides: 1. Wipe the TEMS1 clean of dirt if any. <Cleaning procedure> • Clear away a dirt or a foreign object on the sensor with a cotton swab. • When a dirt is left even if you cleaned the sensor by above procedure, clear away a dirt or a foreign object on the sensor using a cotton swab dampened with the alcohol. And, wipe off the sensor with a dry cotton swab afterwards. 2. Check the fusing unit-MFPB CN21E for proper connection and correct or change as necessary. 3. Replace the fusing unit.

Code: P-5, P-28
Description: • IDC sensor (front) failure • IDC sensor (rear) failure
• When adjusting the IDC sensor, output voltage detected for all eight sample patterns are above specified value. • When adjustment is complete, sensor’s output voltage with selected light intensity is under specified value. • During image stabilization (gamma correction control), detected output value for IDC sensor did not go below threshold (half the value of what is detected by IDC sensor on the belt surface) for three consecutive times (position of the pattern end is not detected). • During image stabilization (gamma correction control), sensor’s output value of each color for hyper 0 gradation after the primary approximation is half the detection level on the belt surface or under.
Causes: • IDC sensor/Fr (IDCS/Fr) • IDC sensor/Rr (IDCS/Rr) • IDC sensor shutter solenoid (SD2) • MFP board (MFPB) • High voltage unit/1 (HV1) • High voltage unit/2 (HV2) • Transfer belt unit
Troubleshooting Guides: 1. Wipe clean the surface of the transfer belt with a soft cloth, if it is dirty. 2. Replace the transfer belt unit if the transfer belt is damaged. 3. Reinstall or reconnect IDCS/Fr, connectors connecting between IDCS/Fr-relay CN228-MFPB CN32E, and the sensor shutter, if any of the foregoing parts is installed or connected improperly. 4. Reinstall or reconnect IDCS/Rr, connectors connecting between IDCS/Rr-relay CN228-MFPB CN32E, and the sensor shutter, if any of the foregoing parts is installed or connected improperly. 5. Clean IDCS/Fr or IDCS/Rr if it is dirty. 6. Check the connector between HV1 CN1, CN2-MFPB CN12E for proper connection. 7. Check the connector between HV2 CN1-MFPB CN13E for proper connection. 8. Check the connector between SD2-relay CN551-relay CN228-MFPB CN19E for proper connection. 9. Check that the IDC sensor shutter opens and closes properly. 10. Open/close the lower front door, run an image stabilization sequence, and select [Service Mode] -> [State Confirmation] -> [Level History 1] to check the IDC value. If the value is 1.0 V or less, replace IDCS/Fr or IDCS/Rr. • IDC1: IDCS/Fr • IDC2: IDCS/Rr 11. Replace HV1. 12. Replace HV2. 13. MFPB F3E, F12E, or F13E conduction check 14. Replace MFPB.

Code: P-6, P-7, P-8, P-9
Description: • Cyan imaging unit failure • Magenta imaging unit failure • Yellow imaging unit failure • Black imaging unit failure
All density readings taken from the density pattern produced on the transfer belt are equal or under the IDC sensor photo receiver output value during max. density adjustment (Vg/Vdc adjustment).
Causes: • Imaging unit/C • Imaging unit/M • Imaging unit/Y • Drum unit/K • Developing unit/K • Transfer belt unit • High voltage unit/1 (HV1) • High voltage unit/2 (HV2) • IDC sensor/Fr (IDCS/Fr) • IDC sensor/Rr (IDCS/Rr) • MFP board (MFPB)
Troubleshooting Guides: 1. Select [Service Mode] -> [Imaging Process Adjustment] -> [Max Image Density Adj] and, if the setting value is negative, readjust. 2. Check the drive transmission portion of the imaging unit and correct as necessary. 3. Clean the IDC sensor/Fr or IDC sensor/Rr window if dirty. 4. Clean the contact of the imaging unit connector if dirty. 5. Check the connector between HV1 CN1,CN2-MFPB CN12E for proper connection. 6. Check the connector between HV2 CN1-MFPB CN13E for proper connection. 7. Replace the imaging unit/Y,M,C. 8. Replace the drum unit/K. 9. Replace the developing unit/K. 10. Replace the transfer belt unit. 11. Replace HV1. 12. Replace HV2. 13. MFPB F3E, F12E, or F13E conduction check 14. Replace MFPB.

Code: S-2
Description: CIS gain adjustment failure. It is detected that the CIS clamp gain adjustment value is faulty.
Causes: • CIS module (CIS) • Dual scan image processing board (DSIPB) • MFP board (MFPB)
Troubleshooting Guides: 1. Correct the harness connection between CIS and DSIPB if faulty. 2. Correct the harness connection between DSIPB and MFPB if faulty. 3. Check for possible extraneous light and correct as necessary. 4. Wipe clean the back side scanning glass surface and shading sheet. 5. Replace CIS. 6. Replace DSIPB. 7. Replace MFPB.

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[SOLVED] Quick fix Konica-Minolta C759 list error codes