[SOLVED] Quick fix Konica-Minolta C550i list error codes

– Compatible Printer model: Konica-Minolta bizhub C550i
– Konica-Minolta bizhub C550i Error Codes with quick guides:

Code: C0002
Description: Paper feed communication error (When PC-116, PC-216, PC-416, or PC-417 is installed)
When the base board (BASEB) is receiving data, a communication error is detected.
Causes: • CPU board (CPUB)
• Base board (BASEB)
• PC control board (PCCB)
Troubleshooting Guides: 1. Turn OFF the main power switch and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.
2. Correct or replace the connector connection between the main body and the paper feed cabinet if faulty.
3. Check CPUB for proper installation and correct as necessary.
4. Rewrite the firmware.
5. PCCB F11 conduction check (PC-417)
6. Replace PCCB. (PC-116/PC-216 / PC-416 / PC-417)
7. Replace CPUB.
8. Replace BASEB.

Code: C0104, C0105
Description: • C0104: Tray 3/4 feeder transportation motor failure to turn (When PC-417 is installed)
• C0105: Tray 3/4 feeder transportation motor turning at abnormal timing (When PC-417 is installed)
• C0104: The control circuit detects motor failure to turn while the motor is turning.
• C0105: The control circuit detects motor turning while the motor remains stationary.
Causes: • Transport motor (M152)
• PC control board (PCCB)
Troubleshooting Guides: 1. Check the connector between M152-PCCB CN5 for proper connection and correct as necessary.
2. Check the connector of M152 for proper drive coupling and correct as necessary.
3. M152 load check • Check code: 28 • Multi code: 51, 52, 53, 54 (bizhub C650i), 51, 53, 54 (bizhub C550i), 51, 52, 54 (bizhub C450i) • Control signal: PCCB CN5-1 to 8 • Location of electrical component: 7-K
4. Replace M152.
5. PCCB F300 conduction check
6. Replace PCCB.

Code: C0106
Description: Tray 3 paper feed motor turning at abnormal timing (When PC-116 or PC-216 is installed)
• The control circuit detects motor failure to turn while the motor is turning.
• The control circuit detects motor turning while the motor remains stationary.
Causes: • Tray 3 paper feed motor (M111)
• PC control board (PCCB)
Troubleshooting Guides: 1. Check the connector between M111-PCCB CN5 for proper connection and correct as necessary.
2. Check the connector of M111 for proper drive coupling and correct as necessary.
3. M111 load check • Check code: 28 • Multi code: 11, 12, 13, 14 (bizhub C650i), 11, 13, 14 (bizhub C550i), 11, 12, 14 (bizhub C450i) • Control signal: PCCB CN5-5 (CW/CCW) • Location of electrical component: PC-116/PC-216 4-C
4. Replace M111.
5. Replace PCCB.

Code: C0106
Description: Transfer LCT paper feed motor turning at abnormal timing (When PC-416 is installed)
• The control circuit detects motor failure to turn while the motor is turning.
• The control circuit detects motor turning while the motor remains stationary.
Causes: • Paper feed motor (M131)
• PC control board (PCCB)
Troubleshooting Guides: 1. Check the connector between M131-PCCB CN5 for proper connection and correct as necessary.
2. Check the connector of M131 for proper drive coupling and correct as necessary.
3. M131 load check • Check code: 28 • Multi code: 1, 2, 3, 4 (bizhub C650i), 1, 3, 4 (bizhub C550i), 1, 2, 4 (bizhub C450i) • Control signal: PCCB CN5-5 (CW/CCW) • Location of electrical component: PC-416 4-J
4. Replace M131.
5. Replace PCCB.

Code: C0107
Description: Tray 3 vertical transport motor turning at abnormal timing (When PC-116 or PC-216 is installed)
• The control circuit detects motor failure to turn while the motor is turning.
• The control circuit detects motor turning while the motor remains stationary.
Causes: • Tray 3 vertical transport motor (M112)
• PC control board (PCCB)
Troubleshooting Guides: 1. Check the connector between M112-PCCB CN5 for proper connection and correct as necessary.
2. Check the connector of M112 for proper drive coupling and correct as necessary.
3. M112 load check • Check code: 28 • Multi code: 21, 22, 23, 24 (bizhub C650i), 21, 23, 24 (bizhub C550i), 21, 22, 24 (bizhub C450i) • Control signal: PCCB CN5-13 (CW/CCW) • Location of electrical component: PC-116/PC-216 3 to 4-C
4. Replace M112.
5. Replace PCCB.

Code: C0107
Description: Transfer LCT vertical transport motor turning at abnormal timing (When PC-416 is installed)
• The control circuit detects motor failure to turn while the motor is turning.
• The control circuit detects motor turning while the motor remains stationary.
Causes: • Vertical transport motor (M132)
• PC control board (PCCB)
Troubleshooting Guides: 1. Check the connector between M132-PCCB CN5 for proper connection and correct as necessary.
2. Check the connector of M132 for proper drive coupling and correct as necessary.
3. M132 load check • Check code: 28 • Multi code: 46, 47, 48, 49 (bizhub C650i), 46, 48, 49 (bizhub C550i), 46, 47, 49 (bizhub C450i) • Control signal: PCCB CN5-13 (CW/CCW) • Location of electrical component: PC-416 4-J
4. Replace M132.
5. Replace PCCB.

Code: C0107
Description: Intermediate motor turning at abnormal timing (When PC-417 is installed)
• The control circuit detects motor failure to turn while the motor is turning.
• The control circuit detects motor turning while the motor remains stationary.
Causes: • Intermediate motor (M151)
• PC control board (PCCB)
Troubleshooting Guides: 1. Check the connector between M151-relay CN73-PCCB CN20 for proper connection and correct as necessary.
2. Check the connector of M151 for proper drive coupling and correct as necessary.
3. M151 load check • Check code: 28 • Multi code: 56, 57, 58, 59 (bizhub C650i), 56, 58, 59 (bizhub C550i), 56, 57, 59 (bizhub C450i) • Control signal: PCCB CN20-1 to 3 • Location of electrical component: PC-417 7-K
4. Replace M151.
5. Replace PCCB.

Code: C0108
Description: Tray 4 paper feed motor turning at abnormal timing (When PC-216 is installed)
• The control circuit detects motor failure to turn while the motor is turning.
• The control circuit detects motor turning while the motor remains stationary.
Causes: • Tray 4 paper feed motor (M121)
• PC control board (PCCB)
Troubleshooting Guides: 1. Check the connector between M121-PCCB CN9C for proper connection and correct as necessary.
2. Check the connector of M121 for proper drive coupling and correct as necessary.
3. M121 load check • Check code: 28 • Multi code: 16, 17, 18, 19 (bizhub C650i), 16, 18, 19 (bizhub C550i), 16, 17, 19 (bizhub C450i) • Control signal: PCCB CN9C-5 (CW/CCW) • Location of electrical component: PC-216 6-K
4. Replace M121.
5. Replace PCCB.

Code: C0109
Description: Tray 4 vertical transport motor turning at abnormal timing (When PC-216 is installed)
• The control circuit detects motor failure to turn while the motor is turning.
• The control circuit detects motor turning while the motor remains stationary.
Causes: • Tray 4 vertical transport motor (M122)
• PC control board (PCCB)
Troubleshooting Guides: 1. Check the connector between M122-PCCB CN9C for proper connection and correct as necessary.
2. Check the connector of M122 for proper drive coupling and correct as necessary.
3. M122 load check • Check code: 28 • Multi code: 26, 27, 28, 29 (bizhub C650i), 26, 28, 29 (bizhub C550i), 26, 27, 29 (bizhub C450i) • Control signal: PCCB CN9C-13 (CW/CCW) • Location of electrical component: PC-216 6-K
4. Replace M122.
5. Replace PCCB.

Code: C0202
Description: Tray 1 feeder up/down abnormality
The tray 1 upper limit sensor (PS25) 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 lift-up motor (M12)
• Tray 1 upper limit sensor (PS25)
• CPU board (CPUB)
• Base board (BASEB)
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 M12-relay CN180-BASEB CN25E for proper connection and correct as necessary.
3. Check the connector of M12 for proper drive coupling and correct as necessary.
4. Check the connector between PS25-relay CN30-BASEB CN26E for proper connection and correct as necessary.
5. Check CPUB for proper installation and correct as necessary.
6. PS25 I/O check, sensor check • Control signal: BASEB CN26EA-15 (ON) • Location of electrical component: 11-K
7. M12 load check • Check code: 23 • Multi code: 4 • Control signal: BASEB CN25E-1 (REM) • Location of electrical component: 17-K
8. Replace M12.
9. Replace CPUB.
10. Replace BASEB.

Code: C0204
Description: Tray 2 feeder up/down abnormality
The tray 2 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 2 lift-up motor (M13)
• Tray 2 upper limit sensor (PS22)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: Procedure
1. Remove the tray and check to see if a piece of paper is not left inside the machine.
2. Check the connector between M13-relay CN181-BASEB CN25E for proper connection and correct as necessary.
3. Check the connector of M13 for proper drive coupling and correct as necessary.
4. Check the connector between PS22-relay CN40-BASEB CN23E for proper connection and correct as necessary.
5. Check CPUB for proper installation and correct as necessary.
6. PS22 I/O check, sensor check • Control signal: BASEB CN23E-12 (ON) • Location of electrical component: 16-K
7. M13 load check • Check code: 23 • Multi code: 5 • Control signal: BASEB CN25E-10 (REM) • Location of electrical component: 18-K
8. Replace M13.
9. Replace CPUB.
10. Replace BASEB.

Code: C0206
Description: Tray 3 feeder up/down abnormality (When PC-116 or PC-216 is installed)
The tray 3 upper limit sensor (PS116) 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 lift-up motor (M113)
• Tray 3 upper limit sensor (PS116)
• PC control board (PCCB)
• CPU board (CPUB)
• Base board (BASEB)
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 M113-PCCB CN6C for proper connection and correct as necessary.
3. Check the connector of M113 for proper drive coupling and correct as necessary.
4. Check the connector between PS116-relay CN24-PCCB CN4 for proper connection and correct as necessary.
5. Check CPUB for proper installation and correct as necessary.
6. PS116 I/O check, sensor check • Control signal: PCCB CN4-3 (ON) • Location of electrical component: PC-116/PC-216 7-C
7. M113 load check • Check code: 23 • Multi code: 6 • Control signal: PCCB CN6C-8 to 9 • Location of electrical component: PC-116/PC-216 2-C
8. Replace M113.
9. Replace PCCB.
10. Replace CPUB.
11. Replace BASEB.

Code: C0206
Description: Tray 3 feeder up/down abnormality (When PC-417 is installed)
The tray 3 upper limit sensor (PS156) 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 lift-up motor (M143)
• Tray 3 upper limit sensor (PS156)
• PC control board (PCCB)
• CPU board (CPUB)
• Base board (BASEB)
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 M143-PCCB CN6 for proper connection and correct as necessary.
3. Check the connector of M143 for proper drive coupling and correct as necessary.
4. Check the connector between PS156-relay CN25-PCCB CN7 for proper connection and correct as necessary.
5. Check CPUB for proper installation and correct as necessary.
6. PS156 I/O check, sensor check • Control signal: PCCB CN7-9 (ON) • Location of electrical component: PC-417 4-C
7. M143 load check • Check code: 23 • Multi code: 6 • Control signal: PCCB CN6-4 to 5 • Location of electrical component: PC-417 5-K
8. Replace M143.
9. PCCB PS300 conduction check
10. Replace PCCB.
11. Replace CPUB.
12. Replace BASEB.

Code: C0208
Description: Tray 4 feeder up/down abnormality (When PC-216 is installed)
The tray 4 upper limit sensor (PS126) 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 lift-up motor (M123)
• Tray 4 upper limit sensor (PS126)
• PC control board (PCCB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: Procedure
1. Remove the tray and check to see if a piece of paper is not left inside the machine.
2. Check the connector between M123-PCCB CN8C for proper connection and correct as necessary.
3. Check the connector of M123 for proper drive coupling and correct as necessary.
4. Check the connector between PS126-relay CN47-PCCB CN7C for proper connection and correct as necessary.
5. Check CPUB for proper installation and correct as necessary.
6. PS126 I/O check, sensor check • Control signal: PCCB CN7C-3 (ON) • Location of electrical component: PC-216 8-K
7. M123 load check • Check code: 23 • Multi code: 7 • Control signal: PCCB CN8C-8 to 9 • Location of electrical component: PC-216 5-K
8. Replace M123.
9. Replace PCCB.
10. Replace CPUB.
11. Replace BASEB.

Code: C0208
Description: Tray 4 feeder up/down abnormality (When PC-417 is installed)
The tray 4 upper limit sensor (PS166) 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 lift-up motor (M144)
• Tray 4 upper limit sensor (PS166)
• PC control board (PCCB)
• CPU board (CPUB)
• Base board (BASEB)
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 M144-PCCB CN6 for proper connection and correct as necessary.
3. Check the connector of M144 for proper drive coupling and correct as necessary.
4. Check the connector between PS166-relay CN47-PCCB CN4 for proper connection and correct as necessary.
5. Check CPUB for proper installation and correct as necessary.
6. PS166 I/O check, sensor check • Control signal: PCCB CN4-3 (ON) • Location of electrical component: PC-417 4-C 7. M144 load check • Check code: 23 • Multi code:
7 • Control signal: PCCB CN6-9 to 10 • Location of electrical component: PC-417 5-K
8. Replace M144.
9. PCCB PS301 conduction check
10. Replace PCCB.
11. Replace CPUB.
12. Replace BASEB.

Code: C0210
Description: Transfer LCT lift failure (When PC-416 is installed)
• The main tray upper limit sensor (PS136) is not turned ON (blocked) even after the set period of time has elapsed after the paper lift-up operation for the main tray began.
• The shifter stop / lower limit position sensor (PS138) is not turned OFF (unblocked) even after the set period of time has elapsed after the paper lift-up operation for the main tray began.
• The main tray upper limit sensor (PS136) is not turned ON (blocked) even after the set period of time has elapsed after the paper lift-up operating.
• The main tray upper limit sensor (PS136) is not turned OFF (unblocked) even after the set period of time has elapsed after the paper lift-down operation began.
• The shifter stop / lower limit position sensor (PS138) is not turned ON (blocked) even after the set period of time has elapsed after the paper lift-down operation began.
Causes: • Main tray upper limit sensor (PS136)
• Shifter stop / lower limit position sensor (PS138)
• Elevator motor (M134)
• PC control board (PCCB)
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 M134-PCCB CN10L for proper connection and correct as necessary.
3. Check the connector of M134 for proper drive coupling and correct as necessary.
4. Check the connector between PS136-relay CN1-PCCB CN4 for proper connection and correct as necessary.
5. Check the connector between PS138-relay CN16-PCCB CN14L for proper connection and correct as necessary.
6. PS136 I/O check, sensor check • Control signal: PCCB CN4-3 (ON) • Location of electrical component: PC-416 8-J
7. PS138 I/O check, sensor check • Control signal: PCCB CN14L-6 (ON) • Location of electrical component: PC-416 3-J
8. M134 load check • Check code: 23 • Multi code: 9, 10 • Control signal: PCCB CN10L-1 to 2 • Location of electrical component: PC-416 6-J
9. Replace M134.
10. Replace PCCB.

Code: C0211
Description: Manual feed up/down abnormality
• The bypass lift-up position sensor (PS26) is not turned OFF (unblock) even after the paper feed motor (M22) 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 lift-up position sensor (PS26) is not turned ON (blocked) even after the paper feed motor (M22) rotates for a given period of time after the position is switched from feed position at lift-up plate to the stand by position.
Causes: • Paper feed motor (M22)
• Bypass tray lift-up solenoid (SD1)
• Bypass tray lift-up position sensor (PS26)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between M22-BASEB CN31E for proper connection and correct as necessary.
2. Check the connector of M22 for proper drive coupling and correct as necessary.
3. Check the connector between PS26-relay CN13-BASEB CN26E for proper connection and correct as necessary.
4. Check the connector between SD1-relay CN21-relay CN13-BASEB CN26E for proper connection and correct as necessary.
5. Check CPUB for proper installation and correct as necessary.
6. PS26 I/O check, sensor check • Control signal: BASEB CN26EA-6 (ON) • Location of electrical component: 9-K
7. SD1 load check • Check code: 23 • Multi code: 3 • Control signal: BASEB CN26EA-9 (ON) • Location of electrical component: 10-K
8. M22 load check • Check code: 28 • Multi code: 31, 32, 33, 34 (bizhub C650i), 31, 33, 34 (bizhub C550i), 31, 32, 34 (bizhub C450i) • Control signal: BASEB CN31E-1 to 4 • Location of electrical component: 23-K
9. Replace M22.
10. Replace CPUB.
11. Replace BASEB.

Code: C0214
Description: Transfer LCT shift failure (When PC-416 is installed)
• The shifter stop / lower limit position sensor (PS138) is not turned OFF (unblocked) even after the set period of time has elapsed after the shift operation began (shift to the right).
• The shifter home sensor (PS139) is not turned OFF (unblocked) even after the set period of time has elapsed after the shift operation began (shift to the right).
• The shifter stop / lower limit position sensor (PS138) is not turned ON (blocked) even after the set period of time has elapsed after the return operation began (shift to the left).
• The shifter home sensor (PS139) is not turned ON (blocked) even after the set period of time has elapsed after the return operation began (shift to the left).
Causes: • Shifter stop / lower limit position sensor (PS138)
• Shifter home sensor (PS139)
• Shifter motor (M133)
• PC control board (PCCB)
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 M133-PCCB CN10L for proper connection and correct as necessary.
3. Check the connector of M133 for proper drive coupling and correct as necessary.
4. Check the connector between PS138-relay CN16-PCCB CN14L for proper connection and correct as necessary.
5. Check the connector between PS139-relay CN16-PCCB CN14L for proper connection and correct as necessary.
6. PS138 I/O check, sensor check • Control signal: PCCB CN14L-6 (ON) • Location of electrical component: PC-416 3-J
7. PS139 I/O check, sensor check • Control signal: PCCB CN14L-3 (ON) • Location of electrical component: PC-416 4-J
8. M133 load check • Check code: 23 • Multi code: 11, 12 • Control signal: PCCB CN10L-3 to 4 • Location of electrical component: PC-416 5-J
9. Replace M133.
10. Replace PCCB.

Code: C0216
Description: External LCT up/down abnormality (When LU-207 or LU-302 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)
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 (LU-207), relay CN3 (LU-302)-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-207/LU-302 4-G
5. M1 load check • Check code: 23 • Multi code: 8 • Control signal: LUDB CN3-4 (ON) • Location of electrical component: LU-207/LU-302 3-G
6. Replace M1. (LU-207 / LU-302)
7. Replace LUDB. (LU-207 / LU-302)

Code: C1003, C1013
Description: • C1003: PK communication error (Finisher detection) (When FS-540+PK-526 or FS-540SD+PK-526 is installed)
• C1013: PK communication error (PK detection) (When FS-540+PK-526 or FS-540SD+PK-526 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 and unplug the power cord. Connect the power cord after 15 sec. or more, 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) (When FS-533 is installed)
• C1014: Finisher communication error (Finisher detection) (When FS-533 is installed)
When a communication error is detected between the base board (BASEB) and the FS control board (FSCB).
Causes: • FS control board (FSCB)
• Base board (BASEB)
Troubleshooting Guides: 1. Turn OFF the main power switch and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.
2. Rewrite the firmware.
3. Replace FSCB.
4. Replace BASEB.

Code: C1004, C1014
Description: • C1004: Finisher communication error (Engine detection) (When FS-539 or FS-539SD is installed)
• C1014: Finisher communication error (Finisher detection) (When FS-539 or FS-539SD is installed)
When a communication error is detected between the base board (BASEB) and the FS control board (FSCB).
Causes: • FS control board (FSCB)
• Base board (BASEB)
Troubleshooting Guides: 1. Turn OFF the main power switch and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.
2. Rewrite the firmware.
3. Replace FSCB.
4. Replace BASEB.

Code: C1004, C1014
Description: • C1004: Finisher communication error (Engine detection) (When FS-540 or FS-540SD is installed)
• C1014: Finisher communication error (Finisher detection) (When FS-540 or FS-540SD is installed)
When a communication error is detected between the base board (BASEB) and the FS control board (FSCB).
Causes: • FS control board (FSCB)
• Base board (BASEB)
Troubleshooting Guides: 1. Turn OFF the main power switch and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.
2. Rewrite the firmware.
3. Replace FSCB.
4. Replace BASEB.

Code: C1004, C1014
Description: • C1004: Finisher communication error (Engine detection) (When JS-508 is installed)
• C1014: Finisher communication error (Finisher detection) (When JS-508 is installed)
When a communication error is detected between the base board (BASEB) and the JS control board (JSCB).
Causes: JS control board (JSCB)
Troubleshooting Guides: 1. Turn OFF the main power switch and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.
2. Rewrite the firmware.
3. Replace JSCB.

Code: C1007, C1017
Description: • C1007: PI communication error (Finisher detection) (When FS-540+PI-507 or FS-540SD+PI-507 is installed)
• C1017: PI communication error (PI detection) (When FS-540+PI-507 or FS-540SD+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 and unplug the power cord. Connect the power cord after 15 sec. or more, 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) (When FS-539SD is installed)
• C1082: SD communication error (SD detection) (When FS-539SD 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 and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.
2. Rewrite the firmware.
3. Replace SDCB.
4. Replace FSCB.

Code: C1081, C1082
Description: • C1081: SD communication error (Finisher detection) (When FS-540SD is installed)
• C1082: SD communication error (SD detection) (When FS-540SD 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 and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.
2. Rewrite the firmware.
3. Replace SDCB.
4. Replace FSCB.

Code: C1102
Description: Tray lift up motor drive malfunction (When or FS-533 is installed)
• While the exit tray is being lifted, the paper exit tray home sensor (PS107) is not turned OFF (unblocked) after the set period of time has elapsed after the tray lift up motor (M109) is energized.
• While the exit tray is being lowered, the paper exit tray home sensor (PS107) is not turned ON (blocked) after the set period of time has elapsed after the tray lift up motor (M109) is energized.
Causes: • Tray lift up motor (M109)
• Paper exit tray home sensor (PS107)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M109-FSCB CN108 for proper connection and correct as necessary.
2. Check the connector of M109 for proper drive coupling and correct as necessary.
3. Check the connector between PS107-FSCB CN110 for proper connection and correct as necessary.
4. PS107 I/O check, sensor check • Control signal: FSCB CN110 • Location of electrical component: FS-533 7-D to E
5. M109 operation check • Control signal: FSCB CN108 • Location of electrical component: FS-533 10-E
6. Replace M109.
7. FSCB CP109 conduction check
8. Replace FSCB.

Code: C1102
Description: Main tray up/down motor drive malfunction (When FS-539 or FS-539SD is installed)
• While the exit tray is being lifted, the main tray upper position sensor (PS26/PS27) or main tray empty sensor (PS39) is not turned ON (blocked) after the set period of time has elapsed after the main tray up/ down motor (M11) is energized.
• While the exit tray is being lowered, the main tray full sensor (PS29) is not turned ON (blocked) after the set period of time has elapsed after the main tray up/down motor (M11) is energized.
Causes: • Main tray up/down motor (M11)
• Main tray upper position sensor/Rr (PS26)
• Main tray upper position sensor/Fr (PS27)
• Main tray full sensor (PS29)
• Main tray empty sensor (PS39)
• FS control board (FSCB)
Troubleshooting Guides: 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 PS39-relay CN1-FSCB J14 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-539/FS-539SD 2-C
8. PS27 I/O check, sensor check • Control signal: FSCB J14<A>-15 (ON) • Location of electrical component: FS-539/FS-539SD 2-C
9. PS29 I/O check, sensor check • Control signal: FSCB J14-11 (ON) • Location of electrical component: FS-539/FS-539SD 3-C
10. PS39 I/O check, sensor check • Control signal: FSCB J14-8 (ON) • Location of electrical component: FS-539/FS-539SD 3-C
11. M11 operation check • Control signal: FSCB J9<A>-9 to 14 • Location of electrical component: FS-539/FS-539SD 12-C
12. Replace M11.
13. FSCB F3 or F9 conduction check.
14. Replace FSCB.

Code: C1102
Description: Main tray up/down motor drive malfunction (When FS-540 or FS-540SD is installed)
• While the exit tray is being lifted, the main tray lift up detection sensor (PS16/PS17) or main tray empty sensor (PS13) is not turned ON (blocked) after the set period of time has elapsed after the main tray up/ down motor (M6) is energized.
• While the exit tray is being lowered, the main tray full sensor (PS12) is not turned ON (blocked) after the set period of time has elapsed after the main tray up/down motor (M6) is energized.
Causes: • Main tray up/down motor (M6)
• Main tray lift up detection sensor/Fr (PS16)
• Main tray lift up detection sensor/Rr (PS17)
• Main tray full sensor (PS12)
• Main tray empty sensor (PS13)
• FS control board (FSCB)
Troubleshooting Guides: 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 CN10B-FSCB J20 for proper connection and correct as necessary.
4. Check the connector between PS17-relay CN10B-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. Check the connector between PS13-relay CN10A-FSCB J20 for proper connection and correct as necessary.
7. PS16 I/O check, sensor check • Control signal: FSCB J20-4 (ON) • Location of electrical component: FS-540/FS-540SD 11-D
8. PS17 I/O check, sensor check • Control signal: FSCB J20-7 (ON) • Location of electrical component: FS-540/FS-540SD 11-D
9. PS12 I/O check, sensor check • Control signal: FSCB J19-7 (ON) • Location of electrical component: FS-540/FS-540SD 9-D
10. PS13 I/O check, sensor check • FSCB J20<A>-6 (ON) • Location of electrical component: FS-540/FS-540SD 10-D
11. M6 operation check • Control signal: FSCB J23-1 to 11 • Location of electrical component: FS-540/FS-540SD 12-D
12. Replace M6.
13. FSCB F5, F8, F12 conduction check
14. Replace FSCB.

Code: C1103
Description: Alignment motor/Fr drive malfunction (When FS-533 is installed)
• The alignment plate home sensor/Fr (PS108) 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 home sensor/Fr (PS108) is not turned ON (blocked) after the set period of time has elapsed after the alignment motor/Fr (M105) is energized when the plate returned to the home position.
Causes: • Alignment motor/Fr (M105)
• Alignment plate home sensor/Fr (PS108)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M105-FSCB CN102 for proper connection and correct as necessary.
2. Check the connector of M105 for proper drive coupling and correct as necessary.
3. Check the connector between PS108-FSCB CN102 for proper connection and correct as necessary.
4. PS108 I/O check, sensor check • Control signal: FSCB CN102 • Location of electrical component: FS-533 7-J
5. M105 operation check • Control signal: FSCB CN102 • Location of electrical component: FS-533 7-J
6. Replace M105.
7. FSCB CP105 conduction check
8. Replace FSCB.

Code: C1103
Description: Alignment motor/Fr drive malfunction (When FS-539 or FS-539SD is installed)
• The alignment plate home sensor/Fr (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 home sensor/Fr (PS12) is not turned ON (blocked) after the set period of time has elapsed after the alignment motor/Fr (M7) is energized when the plate returned to the home position.
• The alignment plate/Fr does not reach the specified position within the set period of time.
Causes: • Alignment motor/Fr (M7)
• Alignment plate home sensor/Fr (PS12)
• FS control board (FSCB)
Troubleshooting Guides: Procedure
1. Check the connector between M7-relay CN13-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-539/FS-539SD 14-C
5. M7 operation check • Control signal: FSCB J4<A>-5 to 8 • Location of electrical component: FS-539/FS-539SD 13 to 14-C
6. Replace M7.
7. Replace FSCB.

Code: C1103
Description: Alignment motor/Fr drive malfunction (When FS-540 or FS-540SD is installed)
• The alignment plate home sensor/Fr (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 home sensor/Fr (PS9) is not turned ON (blocked) after the set period of time has elapsed after the alignment motor/Fr (M14) is energized when the plate returned to the home position.
• The alignment plate/Fr does not reach the specified position within the set period of time.
Causes: • Alignment motor/Fr (M14)
• Alignment plate home sensor/Fr (PS9)
• FS control board (FSCB)
Troubleshooting Guides: Procedure
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-540/FS-540SD 6-D
5. M14 operation check • Control signal: FSCB J18-1 to 4 • Location of electrical component: FS-540/FS-540SD 5-D
6. Replace M14.
7. Replace FSCB.

Code: C1104
Description: Stacker plate drive motor malfunction (When FS-540 or FS-540SD is installed)
• The stacker plate home sensor (PS30) is not turned OFF (unblocked) after the set period of time has elapsed after the plate drive starts from the home position. Or, the stacker plate position sensor (PS29) is not turned ON (blocked) even after the set period of time has elapsed.
• The stacker plate home sensor (PS30) is not turned ON (blocked) after the set period of time has elapsed after the stacker plate drive motor (M3) is energized when the plate returned to the home position.
Causes: • Stacker plate drive motor (M3)
• Stacker plate position sensor (PS29)
• Stacker plate home sensor (PS30)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M3-relay CN1B-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 PS29-relay CN2-relay CN1B-FSCB J22 for proper connection and correct as necessary.
4. Check the connector between PS30-relay CN2-relay CN1B-FSCB J22 for proper connection and correct as necessary.
5. PS29 I/O check, sensor check • Control signal: FSCB J22-7 (ON) • Location of electrical component: FS-540/FS-540SD 3-D
6. PS30 I/O check, sensor check • Control signal: FSCB J22-10 (ON) • Location of electrical component: FS-540/FS-540SD 3-D
7. M3 operation check • Control signal: FSCB J22-1 to 2 • Location of electrical component: FS-540/FS-540SD 2-D
8. Replace M3.
9. Replace FSCB.

Code: C1105
Description: Bundle eject motor drive malfunction (When FS-539 or FS-539SD is installed)
The gripper home sensor (PS18) is not turned OFF (blocked) or ON (unblocked) even after the set period of time has elapsed after the bundle eject motor (M10) is energized.
Causes: • Bundle eject motor (M10)
• Gripper home sensor (PS18)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M10-relay CN7A-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 CN7A-FSCB J13 for proper connection and correct as necessary.
4. PS18 I/O check, sensor check • Control signal: FSCB J13-13 (ON) • Location of electrical component: FS-539/FS-539SD 16-C
5. M10 operation check • Control signal: FSCB J13-1 to 2 • Location of electrical component: FS-539/FS-539SD 17-C
6. Replace M10.
7. FSCB F8 conduction check
8. Replace FSCB.

Code: C1105
Description: Bundle eject motor drive malfunction (When FS-540 or FS-540SD is installed)
The gripper home 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 energized.
Causes: • Bundle eject motor (M1)
• Gripper home sensor (PS3)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M1-relay CN1A-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 CN1A-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-540/FS-540SD 2-D
5. M1 operation check • Control signal: FSCB J22<A>-1 to 2 • Location of electrical component: FS-540/FS-540SD 1-D
6. Replace M1.
7. Replace FSCB.

Code: C1106
Description: Stapler movement motor drive malfunction (When FS-533 is installed)
• The stapler home sensor (PS110) is not turned OFF (unblocked) after the set period of time has elapsed after the stapler drive starts from the home position.
• The stapler home sensor (PS110) is not turned ON (blocked) after the set period of time has elapsed after the stapler movement motor (M107) is energized when the stapler returned to the home position.
Causes: • Stapler movement motor (M107)
• Stapler home sensor (PS110)
• Stapler relay board (STRYB)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M107-STREYB CN123 for proper connection and correct as necessary.
2. Check the connector of M107 for proper drive coupling and correct as necessary.
3. Check the connector between PS110-FSCB CN110 for proper connection and correct as necessary.
4. PS110 I/O check, sensor check • Control signal: FSCB CN110 • Location of electrical component: FS-533 8-D to E
5. M107 operation check • Control signal: STRYB CN123-5 to 8 • Location of electrical component: FS-533 5-L
6. Replace M107.
7. Replace STRYB.
8. FSCB CP107 conduction check
9. Replace FSCB.

Code: C1106
Description: Stapler movement motor drive malfunction (When FS-539 or FS-539SD is installed)
• The stapler home sensor (PS35) is not turned OFF (unblocked) after the set period of time has elapsed after the stapler drive starts from the home position.
• The stapler home sensor (PS35) is not turned ON (blocked) after the set period of time has elapsed after the stapler movement motor (M13) is energized when the stapler returned to the home position.
• The stapler does not reach the specified position within the set period of time.
Causes: • Stapler movement motor (M13)
• Stapler home sensor (PS35)
• FS control board (FSCB)
Troubleshooting Guides: Procedure
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 PS35-relay CN18-FSCB J21 for proper connection and correct as necessary.
4. PS35 I/O check, sensor check • Control signal: FSCB J21-6 (ON) • Location of electrical component: FS-539/FS-539SD 6-C
5. M13 operation check • Control signal: FSCB J11<A>-1 to 4 • Location of electrical component: FS-539/FS-539SD 4-C
6. Replace M13.
7. FSCB F8 or F10 conduction check
8. Replace FSCB.

Code: C1106
Description: Stapler movement motor drive malfunction (When FS-540 or FS-540SD is installed)
• The corner staple position sensor/Fr (PS53) is not turned OFF (unblocked) after the set period of time has elapsed after the stapler drive starts from the home position.
• The corner staple position sensor/Fr (PS53) is not turned ON (blocked) after the set period of time has elapsed after the stapler movement motor (M19) is energized when the stapler returned to the home position.
• The stapler does not reach the specified position within the set period of time.
Causes: • Stapler movement motor (M19)
• Corner staple position sensor/Fr (PS53)
• FS control board (FSCB)
Troubleshooting Guides: 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 PS53-FSCB J16 for proper connection and correct as necessary.
4. PS53 I/O check, sensor check • Control signal: FSCB J16-3 (ON) • Location of electrical component: FS-540/FS-540SD 15-K to L
5. M19 operation check • Control signal: FSCB J17-8 to 11 • Location of electrical component: FS-540/FS-540SD 13 to 14-D
6. Replace M19.
7. FSCB F10 or F13 conduction check
8. Replace FSCB.

Code: C1109
Description: Stapler motor drive malfunction (When FS-533 is installed)
The stapler home sensor (PS110) is not turned ON (blocked) even after the set period of time has elapsed after the stapler motor is energized.
Causes: • Stapler unit
• Stapler home sensor (PS110)
• Stapler relay board (STRYB)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between the stapler unit-STRYB CN122, CN123 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 PS110-FSCB CN110 for proper connection and correct as necessary.
4. PS110 I/O check, sensor check • Control signal: FSCB CN110 • Location of electrical component: FS-533 8-D to E
5. Replace the stapler unit.
6. Replace STRYB.
7. Replace FSCB.

Code: C1109
Description: Stapler motor drive malfunction (When FS-539 or FS-539SD is installed)
• The stapler sensor is not turned OFF or ON even after the set period of time has elapsed after the stapler motor is energized.
• The stapler center position sensor (PS24) is turned ON (blocked), when the stapler motor is running.
Causes: • The stapler sensor is not turned OFF or ON even after the set period of time has elapsed after the stapler
motor is energized.
• The stapler center position sensor (PS24) is turned ON (blocked), when the stapler motor is running.
Troubleshooting Guides: 1. Check the connector between the stapler unit-relay CN6-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 PS24-relay CN3-FSCB J11 for proper connection and correct as necessary.
4. PS24 I/O check, sensor check • Control signal: FSCB J11-6 (ON) • Location of electrical component: FS-539/FS-539SD 5-C
5. Replace the stapler unit.
6. Replace FSCB.

Code: C1109
Description: Stapler motor drive malfunction (When FS-540 or FS-540SD is installed)
• The stapler sensor is not turned OFF or ON even after the set period of time has elapsed after the stapler motor (M5) is energized.
• The stapler center position sensor (PS20) is turned ON (blocked), when the stapler motor (M5) is running.
Causes: • Stapler unit
• Stapler center position sensor (PS20)
• FS control board (FSCB)
Troubleshooting Guides: Procedure
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 PS20-FSCB J16 for proper connection and correct as necessary.
4. PS20 I/O check, sensor check • Control signal: FSCB J16<A>-3 • Location of electrical component: FS-540/FS-540SD 14-K to L
5. Replace the stapler unit.
6. Replace FSCB.

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Code: C1112
Description: Stapler motor malfunction (When FS-539SD 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: • Stapler unit
• SD control board (SDCB)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between the stapler unit-SDCB J4 for proper connection and correct as necessary.
2. Check the connector of the stapler unit for proper drive coupling and correct as necessary.
3. Replace the stapler unit.
4. Replace SDCB.
5. Replace FSCB

Code: C1112
Description: Stapler motor malfunction (When FS-540SD 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: • Stapler unit
• SD control board (SDCB)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between the stapler unit-SDCB J4 for proper connection and correct as necessary.
2. Check the connector of the stapler unit for proper drive coupling and correct as necessary.
3. Replace the stapler unit.
4. Replace SDCB.
5. FSCB F7 conduction check
6. Replace FSCB.

Code: C1113
Description: Stopper drive motor malfunction (When FS-539SD is installed)
The stopper home sensor (PS106) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the stopper drive motor (M104) is energized.
Causes: • Stopper drive motor (M104)
• Stopper home sensor (PS106)
• SD control board (SDCB)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M104-SDCB J10 for proper connection and correct as necessary.
2. Check the connector of M104 for proper drive coupling and correct as necessary.
3. Check the connector between PS106-SDCB J10 for proper connection and correct as necessary.
4. PS106 I/O check, sensor check • Control signal: SDCB J10-5 (ON) • Location of electrical component: FS-539/FS-539SD 2-P
5. M104 operation check • Control signal: SDCB J10-6 to 9 • Location of electrical component: FS-539/FS-539SD 2-P
6. Replace M104.
7. Replace SDCB.
8. Replace FSCB.

Code: C1113
Description: Stopper drive motor malfunction (When FS-540SD is installed)
The stopper home sensor (PS106) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the stopper drive motor (M104) is energized.
Causes: • Stopper drive motor (M104)
• Stopper home sensor (PS106)
• SD control board (SDCB)
• FS control board (FSCB)
Troubleshooting Guides: Procedure
1. Check the connector between M104-SDCB J10 for proper connection and correct as necessary.
2. Check the connector of M104 for proper drive coupling and correct as necessary.
3. Check the connector between PS106-SDCB J10 for proper connection and correct as necessary.
4. PS106 I/O check, sensor check • Control signal: SDCB J10-5 (ON) • Location of electrical component: FS-540/FS-540SD 2-P
5. M104 operation check • Control signal: SDCB J10-6 to 9 • Location of electrical component: FS-540/FS-540SD 2-P
6. Replace M104.
7. Replace SDCB.
8. Replace FSCB.

Code: C1114
Description: Alignment motor drive malfunction (When FS-539SD is installed)
The alignment home sensor (PS104) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the alignment motor (M103) is energized.
Causes: • Alignment motor (M103)
• Alignment home sensor (PS104)
• SD control board (SDCB)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M103-relay CN26-SDCB J7 for proper connection and correct as necessary.
2. Check the connector of M103 for proper drive coupling and correct as necessary.
3. Check the connector between PS104-relay CN26-SDCB J7 for proper connection and correct as necessary.
4. PS104 I/O check, sensor check • Control signal: SDCB J7-6 (ON) • Location of electrical component: FS-539/FS-539SD 6-P
5. M103 operation check • Control signal: SDCB J7-7 to 10 • Location of electrical component: FS-539/FS-539SD 6-P
6. Replace M103.
7. Replace SDCB.
8. Replace FSCB.

Code: C1114
Description: Alignment motor drive malfunction (When FS-540SD is installed)
The alignment home sensor (PS104) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the alignment motor (M103) is energized.
Causes: • Alignment motor (M103)
• Alignment home sensor (PS104)
• SD control board (SDCB)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M103-relay CN29-SDCB J7 for proper connection and correct as necessary.
2. Check the connector of M103 for proper drive coupling and correct as necessary.
3. Check the connector between PS104-relay CN29-SDCB J7 for proper connection and correct as necessary.
4. PS104 I/O check, sensor check • Control signal: SDCB J7-6 (ON) • Location of electrical component: FS-540/FS-540SD 6-P
5. M103 operation check • Control signal: SDCB J7-7 to 10 • Location of electrical component: FS-540/FS-540SD 5-P
6. Replace M103.
7. Replace SDCB.
8. Replace FSCB.

Code: C1115
Description: Center fold knife motor malfunction (When FS-539SD is installed)
The center fold knife home sensor (PS108) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the center fold knife motor (M109) is energized.
Causes: • Center fold knife motor (M109)
• Center fold knife home sensor (PS108)
• SD control board (SDCB)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M109-SDCB J11 for proper connection and correct as necessary.
2. Check the connector of M109 for proper drive coupling and correct as necessary.
3. Check the connector between PS108-relay CN26-SDCB J7 for proper connection and correct as necessary.
4. PS108 I/O check, sensor check • Control signal: SDCB J7-3 (ON) • Location of electrical component: FS-539/FS-539SD 6 to 7-P
5. M109 operation check • Control signal: SDCB J11-11 to 20 • Location of electrical component: FS-539/FS-539SD 2-L
6. Replace M109.
7. Replace SDCB.
8. Replace FSCB.

Code: C1115
Description: Center fold knife motor malfunction (When FS-540SD is installed)
The center fold knife home sensor (PS108) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the center fold knife motor (M109) is energized.
Causes: • Center fold knife motor (M109)
• Center fold knife home sensor (PS108)
• SD control board (SDCB)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M109-SDCB J11 for proper connection and correct as necessary.
2. Check the connector of M109 for proper drive coupling and correct as necessary.
3. Check the connector between PS108-relay CN29-SDCB J7 for proper connection and correct as necessary.
4. PS108 I/O check, sensor check • Control signal: SDCB J7-3 (ON) • Location of electrical component: FS-540/FS-540SD 6-P
5. M109 operation check • Control signal: SDCB J11-11 to 20 • Location of electrical component: FS-540/FS-540SD 2-K
6. Replace M109.
7. Replace SDCB.
8. Replace FSCB.

Code: C1124
Description: Tray lift motor/Lw drive malfunction (When FS-540+PI-507 or FS-540SD+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 energized.
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 (When FS-540+PI-507 or FS-540SD+PI-507 is installed)
The tray upper limit sensor/Up (PS204) or tray lower limit sensor/Up (PS205) is not turned ON (blocked) after the set period of time has elapsed after the tray lift motor/Up (M201) is energized.
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 malfunction (When FS-540+PK-526 or FS-540SD+PK-526 is installed)
The 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)
• Punch oscillating home sensor (PS303)
• Punch control board (PKCB)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M302-PKCB CN34 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-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-526 5-C
5. M302 operation check • Control signal: PKCB CN34-1 to 6 • Location of electrical component: PK-526 5-C
6. Replace M302.
7. PKCB ICP2 conduction check
8. Replace PKCB.
9. Replace FSCB.

Code: C1130
Description: ZU transport motor drive malfunction (When FS-540+ZU-609 or FS-540SD+ZU-609 is installed)
• The guide home sensor (PS500) is not turned OFF (unblocked) after the set period of time has elapsed after the folding guide drive starts from the home position.
• The guide home sensor (PS500) is not turned ON (blocked) after the set period of time has elapsed after the ZU transport motor (M500) is energized when the folding guide returned to the home position.
• The folding guide does not reach the specified position within the set period of time.
Causes: • ZU transport motor (M500)
• Guide home sensor (PS500)
• 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 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. 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-540+ZU-609 or FS-540SD+ZU-609 is installed)
• The chopper home sensor (PS501) is not turned OFF (unblocked) after the set period of time has elapsed after the folding claw drive starts from the home position.
• The chopper home sensor (PS501) is not turned ON (blocked) after the set period of time has elapsed after the folding guide motor (M501) is energized when the folding claw returned to the home position.
• The folding claw does not reach the specified position within the set period of time.
Causes: • Folding guide motor (M501)
• Chopper home sensor (PS501)
• 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 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. 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 motor drive malfunction (When FS-533+PK-519 is installed)
• The puncher drive cam sensor (PS203) or puncher home sensor (PS204) is not turned ON (blocked) or
OFF (unblocked) even after the set period of time has elapsed while the punch motor (M201) is energized.
• The punch motor sensor (PS202) is not turned ON when the punch motor (M201) driven.
• The holes with other marketing area is set in [Service Mode] -> [Finisher] -> [Punch option setting].
Causes: • Punch motor (M201)
• Punch motor sensor (PS202)
• Puncher drive cam sensor (PS203)
• Puncher home sensor (PS204)
• PK control board (PKCB)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the number of the holes in [Service Mode] -> [Finisher] -> [Punch option setting].
2. Check the connector between M201-PKCB CN203 for proper connection and correct as necessary.
3. Check the connector of M201 for proper drive coupling and correct as necessary.
4. Check the connector between PS202-PKCB CN204 for proper connection and correct as necessary.
5. Check the connector between PS203-PKCB CN204 for proper connection and correct as necessary.
6. Check the connector between PS204-PKCB CN204 for proper connection and correct as necessary.
7. PS202 I/O check, sensor check • Control signal: PKCB CN204 • Location of electrical component: FS-533 (PK-519) 5-C
8. PS203 I/O check, sensor check • Control signal: PKCB CN204 • Location of electrical component: FS-533 (PK-519) 6-C
9. PS204 I/O check, sensor check • Control signal: PKCB CN204 • Location of electrical component: FS-533 (PK-519) 6-C
10. M201 operation check • Control signal: PKCB CN203-1 to 2 • Location of electrical component: FS-533 (PK-519) 4-C
11. Replace M201.
12. PKCB F201 conduction check
13. Replace PKCB.
14. Replace FSCB.

Code: C1132
Description: Punch drive motor drive malfunction (When FS-539+PK-524 or FS-539SD+PK-524 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.
Causes: • Punch drive motor (M1)
• Punch home sensor (PS1)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M1-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-539/FS-539SD 13-K
5. M1 operation check • Control signal: FSCB J7-7 to 8 • Location of electrical component: FS-539/FS-539SD 13-K
6. Replace M1.
7. Replace FSCB.

Code: C1132
Description: Punch drive motor drive malfunction (When FS-540+PK-526 or FS-540SD+PK-526 is installed)
The punch home sensor (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: • Punch drive motor (M301)
• Punch home sensor (PS301)
• Punch control board (PKCB)
• FS control board (FSCB)
Troubleshooting Guides: 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-526 3-C
5. M301 operation check • Control signal: PKCB CN35-1 to 3 • Location of electrical component: PK-526 2-C
6. Replace M301.
7. Replace PKCB.
8. Replace FSCB.

Code: C1133
Description: Pressure motor drive malfunction (When FS-540+ZU-609 or FS-540SD+ZU-609 is installed)
The press home sensor (PS502) is not turned ON (unblocked), even after the set period of time has elapsed after the pressure motor (M502) starts searching its home position. Or, is not turned OFF (blocked) after it is turned ON (unblocked).
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/Rr drive malfunction (When FS-533 is installed)
• The alignment plate home sensor/Rr (PS109) 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 home sensor/Rr (PS109) is not turned ON (blocked) after the set period of time has elapsed while the alignment motor/Rr (M106) is energized when the plate returned to the home position.
Causes: • Alignment motor/Rr (M106)
• Alignment plate home sensor/Rr (PS109)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M106-FSCB CN102 for proper connection and correct as necessary.
2. Check the connector of M106 for proper drive coupling and correct as necessary.
3. Check the connector between PS109-FSCB CN102 for proper connection and correct as necessary.
4. PS109 I/O check, sensor check • Control signal: FSCB CN102 • Location of electrical component: FS-533 7-J
5. M106 operation check • Control signal: FSCB CN102 • Location of electrical component: FS-533 8-J
6. Replace M106.
7. FSCB CP105 conduction check
8. Replace FSCB.

Code: C1140
Description: Alignment motor/Rr drive malfunction (When FS-539 or FS-539SD is installed)
• The alignment plate home sensor/Rr (PS13) 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 home sensor/Rr (PS13) is not turned ON (blocked) after the set period of time has elapsed while the alignment motor/Rr (M8) is energized when the plate returned to the home position.
• The plate does not reach the specified position within the set period of time.
Causes: • Alignment motor/Rr (M8)
• Alignment plate home sensor/Rr (PS13)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M8-relay CN19-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 J9-12 (ON) • Location of electrical component: FS-539/FS-539SD 10-C
5. M8 operation check • Control signal: FSCB J12-13 to 16 • Location of electrical component: FS-539/FS-539SD 7-C
6. Replace M8.
7. Replace FSCB.

Code: C1140
Description: Alignment motor/Rr drive malfunction (When FS-540 or FS-540SD is installed)
• The alignment plate home sensor/Rr (PS6) 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 home sensor/Rr (PS6) is not turned ON (blocked) after the set period of time has elapsed while the alignment motor/Rr (M13) is energized when the plate returned to the home position.
• The plate does not reach the specified position within the set period of time.
Causes: • Alignment motor/Rr (M13)
• Alignment plate home sensor/Rr (PS6)
• FS control board (FSCB)
Troubleshooting Guides: Procedure
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-540/FS-540SD 4-D
5. M13 operation check • Control signal: FSCB J21-1 to 4 • Location of electrical component: FS-540/FS-540SD 4-D
6. Replace M13.
7. Replace FSCB.

Code: C1141
Description: FNS paddle motor drive malfunction (When FS-539 or FS-539SD is installed)
The upper paddle home 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 energized.
Causes: • FNS paddle motor (M5)
• Upper paddle home sensor (PS14)
• FS control board (FSCB)
Troubleshooting Guides: 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-539/FS-539SD 15-C
5. M5 operation check • Control signal: FSCB J4<A>-12 to 15 • Location of electrical component: FS-539/FS-539SD 14-C
6. Replace M5.
7. Replace FSCB.

Code: C1141
Description: FNS paddle motor drive malfunction (When FS-540 or FS-540SD is installed)
The upper 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 energized.
Causes: • FNS paddle motor (M9)
• Upper paddle home sensor (PS25)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M9-relay CN13B-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 CN13B-FSCB J14 for proper connection and correct as necessary.
4. PS25 I/O check, sensor check • Control signal: FSCB J14-13 (ON) • Location of electrical component: FS-540/FS-540SD 16-K to L
5. M9 operation check • Control signal: FSCB J14-7 to 10 • Location of electrical component: FS-540/FS-540SD 17-K to L
6. Replace M9.
7. Replace FSCB.

Code: C1142
Description: Paddle up/down motor drive malfunction (When FS-540 or FS-540SD 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 CN13A-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 CN13A-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-540/FS-540SD 18-K to L
5. M7 operation check • Control signal: FSCB J14<A>-1 to 4 • Location of electrical component: FS-540/FS-540SD 18-K to L
6. Replace M7.
7. Replace FSCB.

Code: C1143
Description: Arm drive motor drive malfunction (When FS-540 or FS-540SD is installed)
The arm home 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 sensor (PS26)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M8-relay CN13A-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 CN13B-FSCB J14 for proper connection and correct as necessary.
4. PS26 I/O check, sensor check • Control signal: FSCB J14-6 (ON) • Location of electrical component: FS-540/FS-540SD 17-K to L
5. M8 operation check • Control signal: FSCB J14<A>-8 to 11 • Location of electrical component: FS-540/FS-540SD 18-K to L
6. Replace M8.
7. Replace FSCB.

Code: C1144
Description: Pre-eject drive motor drive malfunction (When FS-539 or FS-539SD is installed)
• The pre-eject home sensor (PS21) is not turned OFF (unblocked) after the set period of time has elapsed after the trailing edge stopper drive starts from the home position. Or, the trailing edge stopper does not reach the specified position within the set period of time.
• The pre-eject home sensor (PS21) is not turned ON (blocked) after the set period of time has elapsed after the pre-eject drive motor (M9) is energized when the trailing edge stopper returned to the home position.
Causes: • Pre-eject drive motor (M9)
• Pre-eject home sensor (PS21)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M9-relay CN7A-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 CN7B-FSCB J12 for proper connection and correct as necessary.
4. PS21 I/O check, sensor check • Control signal: FSCB J12-6 (ON) • Location of electrical component: FS-539/FS-539SD 8-C
5. M9 operation check • Control signal: FSCB J13-3 to 4 • Location of electrical component: FS-539/FS-539SD 17-C
6. Replace M9.
7. FSCB F8 conduction check
8. Replace FSCB.

Code: C1144
Description: Pre-eject drive motor drive malfunction (When FS-540 or FS-540SD is installed)
• The trailing edge stopper home sensor (PS31) is not turned OFF after the set period of time has elapsed after the trailing edge stopper drive starts from the home position. Or, the trailing edge stopper does not reach the specified position within the set period of time.
• The trailing edge stopper home sensor (PS31) is not turned ON after the set period of time has elapsed after the pre-eject drive motor (M2) is energized when the trailing edge stopper returned to the home position.
Causes: • Pre-eject drive motor (M2)
• Trailing edge stopper home sensor (PS31)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M2-relay CN1A-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 CN1B-FSCB J22 for proper connection and correct as necessary.
4. PS31 I/O check, sensor check • Control signal: FSCB J22-13 (ON) • Location of electrical component: FS-540/FS-540SD 3-D
5. M2 operation check • Control signal: FSCB J22<A>-3 to 4 • Location of electrical component: FS-540/FS-540SD 1-D
6. Replace M2.
7. Replace FSCB.

Code: C1145
Description: Trailing edge stopper motor drive malfunction (When FS-539 or FS-539SD is installed)
• The trailing edge stopper home sensor (PS20) is not turned OFF (unblocked) after the set period of time has elapsed after the trailing edge stopper drive starts from the home position.
• The trailing edge stopper home sensor (PS20) is not turned ON (blocked) after the laps of give time after the trailing edge stopper motor (M6) is energized when trailing edge stopper returned to the home position.
Causes: • Trailing edge stopper motor (M6)
• Trailing edge stopper home sensor (PS20)
• FS control board (FSCB)
Troubleshooting Guides: 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 CN13-FSCB J4 for proper connection and correct as necessary.
4. PS20 I/O check, sensor check • Control signal: FSCB J4<A>-11 (ON) • Location of electrical component: FS-539/FS-539SD 14-C
5. M6 operation check • Control signal: FSCB J5-13 to 16 • Location of electrical component: FS-539/FS-539SD 15-K
6. Replace M6.
7. Replace FSCB.

Code: C1145
Description: Trailing edge stopper motor/Fr drive malfunction (When FS-540 or FS-540SD is installed)
• The trailing edge stopper sensor/Fr (PS10) is not turned OFF (unblocked) after the set period of time has elapsed after the trailing edge stopper drive starts from the home position.
• The trailing edge stopper sensor/Fr (PS10) is not turned ON (blocked) after the set period of time has elapsed after the trailing edge stopper motor/Fr (M12) is energized when the trailing edge stopper returned to the home position.
Causes: • Trailing edge stopper motor/Fr (M12)
• Trailing edge stopper sensor/Fr (PS10)
• FS control board (FSCB)
Troubleshooting Guides: 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-540/FS-540SD 6-D
5. M12 operation check • Control signal: FSCB J18-14 to 17 • Location of electrical component: FS-540/FS-540SD 6-D
6. Replace M12.
7. Replace FSCB.

Code: C1146
Description: Trailing edge stopper motor/Rr drive malfunction (When FS-540 or FS-540SD is installed)
• The trailing edge stopper sensor/Rr (PS7) is not turned OFF (unblocked) after the set period of time has elapsed after the trailing edge stopper drive starts from the home position.
• The trailing edge stopper sensor/Rr (PS7) is not turned ON (blocked) after the set period of time has elapsed after the trailing edge stopper motor/Rr (M11) is energized when the trailing edge stopper returned to the home position.
Causes: • Trailing edge stopper motor/Rr (M11)
• Trailing edge stopper sensor/Rr (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-540/FS-540SD 5-D
5. M11 operation check • Control signal: FSCB J21-17 to 20 • Location of electrical component: FS-540/FS-540SD 5-D
6. Replace M11.
7. Replace FSCB.

Code: C1152
Description: Paper transport belt motor malfunction (When FS-540SD is installed)
Even after a predetermined period of time has elapsed since the paper transport belt motor (M134) starts operation, the lock signal is not set to L (turning).
Causes: • Paper transport belt motor (M134)
• SD control board (SDCB)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M134-relay CN21-FSCB J24 for proper connection and correct as necessary.
2. Check the connector of M134 for proper drive coupling and correct as necessary.
3. M134 operation check • Control signal: FSCB J24-1 to 11 • Location of electrical component: FS-540/FS-540SD 7-M
4. Replace M134.
5. Replace SDCB.
6. FSCB F4 or F8 conduction check
7. Replace FSCB.

Code: C1156
Description: SD paddle motor malfunction (When FS-539SD is installed)
The paddle home sensor (PS105) is not turned OFF (blocked) or ON (unblocked) even after the set period of time has elapsed while the SD paddle motor (M107) is energized.
Causes: • SD paddle motor (M107)
• Paddle home sensor (PS105)
• SD control board (SDCB)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M107-SDCB J8 for proper connection and correct as necessary.
2. Check the connector of M107 for proper drive coupling and correct as necessary.
3. Check the connector between PS105-SDCB J8 for proper connection and correct as necessary.
4. PS105 I/O check, sensor check • Control signal: SDCB J8-3 (ON) • Location of electrical component: FS-539/FS-539SD 4-P
5. M107 operation check • Control signal: SDCB J8-4 to 7 • Location of electrical component: FS-539/FS-539SD 4-P
6. Replace M107.
7. Replace SDCB.
8. Replace FSCB.

Code: C1156
Description: SD paddle motor malfunction (When FS-540SD is installed)
The paddle home sensor (PS105) is not turned OFF (blocked) or ON (unblocked) even after the set period of time has elapsed while the SD paddle motor (M107) is energized.
Causes: • SD paddle motor (M107)
• Paddle home sensor (PS105)
• SD control board (SDCB)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M107-SDCB J8 for proper connection and correct as necessary.
2. Check the connector of M107 for proper drive coupling and correct as necessary.
3. Check the connector between PS105-SDCB J8 for proper connection and correct as necessary.
4. PS105 I/O check, sensor check • Control signal: SDCB J8-3 (ON) • Location of electrical component: FS-540/FS-540SD 4-P
5. M107 operation check • Control signal: SDCB J8-4 to 7 • Location of electrical component: FS-540/FS-540SD 3-P
6. Replace M107.
7. Replace SDCB.
8. Replace FSCB.

Code: C1182
Description: Tray shift motor drive malfunction (When JS-508 is installed)
• The tray shift home sensor (PS1) is not turned ON (blocked) after the set period of time has elapsed after the tray shift motor (M1) is energized (start of moving to the home position.)
• The tray shift home sensor (PS1) is not turned OFF (unblocked) after the set period of time has elapsed after the tray shift motor (M1) is energized (start of moving to the shift position.)
Causes: • Tray shift motor (M1)
• Tray shift home sensor (PS1)
• JS control board (JSCB)
Troubleshooting Guides: 1. Check the connector between M1-JSCB CN208 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-JSCB CN208 for proper connection and correct as necessary.
4. PS1 I/O check, sensor check • Control signal: JSCB CN208-5 (ON) • Location of electrical component: JS-508 5-C
5. M1 operation check • Control signal: JSCB CN208-1 (DRV) • Location of electrical component: JS-508 4 to 5-C
6. Replace M1.
7. JSCB ICP3 conduction check
8. Replace JSCB.

Code: C1184
Description: Paper delivery control motor drive malfunction (When FS-539 or FS-539SD is installed)
• The paper delivery control home sensor (PS28) is not turned OFF (blocked) after the set period of time has elapsed after the paper detection lever drive starts from the home position.
• The paper delivery control home sensor (PS28) is not turned ON (unblocked) after the set period of time has elapsed after the paper delivery control motor (M12) is energized when the paper detection lever returned to the home position.
Causes: • Paper delivery control motor (M12)
• Paper delivery control home sensor (PS28)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M12-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<A>-12 (ON) • Location of electrical component: FS-539/FS-539SD 2-C
5. M12 operation check • Control signal: FSCB J14<A>-9 to 12 • Location of electrical component: FS-539/FS-539SD 1-C
6. Replace M12.
7. Replace FSCB.

Code: C1184
Description: Paper delivery control motor drive malfunction (When FS-540 or FS-540SD is installed)
• The paper delivery control home sensor (PS11) is not turned OFF (blocked) after the set period of time has elapsed after the paper detection lever drive starts from the home position.
• The paper delivery control home sensor (PS11) is not turned ON (unblocked) after the set period of time has elapsed after the paper delivery control motor (M15) is energized when the paper detection lever returned to the home position.
Causes: • Paper delivery control motor (M15)
• Paper delivery control home sensor (PS11)
• FS control board (FSCB)
Troubleshooting Guides: 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 CN10A-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-540/FS-540SD 10-D
5. M15 operation check • Control signal: FSCB J19-1 to 4 • Location of electrical component: FS-540/FS-540SD 9-D
6. Replace M15.
7. Replace FSCB.

Code: C1195
Description: Paper discharge control motor malfunction (When FS-539SD is installed)
The curl cover detection sensor (PS102) is not turned OFF (unblocked) or ON (blocked) even after the set period
of time has elapsed after the paper discharge control motor (M102) is energized.
Causes: • Paper discharge control motor (M102)
• Curl cover detection sensor (PS102)
• SD control board (SDCB)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M102-relay CN22-relay CN21-SDCB J5 for proper connection and correct as necessary.
2. Check the connector of M102 for proper drive coupling and correct as necessary.
3. Check the connector between PS102-relay CN22-relay CN21-SDCB J5 for proper connection and correct as necessary.
4. PS102 I/O check, sensor check • Control signal: SDCB J5-3 (ON) • Location of electrical component: FS-539/FS-539SD 4-L
5. M102 operation check • Control signal: SDCB J5-4 to 7 • Location of electrical component: FS-539/FS-539SD 4-L
6. Replace M102.
7. Replace SDCB.
8. Replace FSCB.

Code: C1195
Description: Paper discharge control motor malfunction (When FS-540SD is installed)
The curl cover detection sensor (PS102) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the paper discharge control motor (M102) is energized.
Causes: • Paper discharge control motor (M102)
• Curl cover detection sensor (PS102)
• SD control board (SDCB)
• FS control board (FSCB)
Troubleshooting Guides: Procedure
1. Check the connector between M102-relay CN25-relay CN26-SDCB J5 for proper connection and correct as necessary.
2. Check the connector of M102 for proper drive coupling and correct as necessary.
3. Check the connector between PS102-relay CN25-relay CN26-SDCB J5 for proper connection and correct as necessary.
4. PS102 I/O check, sensor check • Control signal: SDCB J5-3 (ON) • Location of electrical component: FS-540/FS-540SD 3-K
5. M102 operation check • Control signal: SDCB J5-4 to 7 • Location of electrical component: FS-540/FS-540SD 3-K
6. Replace M102.
7. Replace SDCB.
8. Replace FSCB.

Code: C1196
Description: Center fold guide motor malfunction (When FS-539SD is installed)
The guide home sensor (PS107) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the center fold guide motor (M106) is energized.
Causes: • Center fold guide motor (M106)
• Guide home sensor (PS107)
• SD control board (SDCB)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M106-SDCB J9 for proper connection and correct as necessary.
2. Check the connector of M106 for proper drive coupling and correct as necessary.
3. Check the connector between PS107-SDCB J9 for proper connection and correct as necessary.
4. PS107 I/O check, sensor check • Control signal: SDCB J9-6 (ON) • Location of electrical component: FS-539/FS-539SD 5-P
5. M106 operation check • Control signal: SDCB J9-7 to 10 • Location of electrical component: FS-539/FS-539SD 4-P
6. Replace M106.
7. Replace SDCB.
8. Replace FSCB.

Code: C1196
Description: Center fold guide motor malfunction (When FS-540SD is installed)
The guide home sensor (PS107) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the center fold guide motor (M106) is energized.
Causes: • Center fold guide motor (M106)
• Guide home sensor (PS107)
• SD control board (SDCB)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M106-SDCB J9 for proper connection and correct as necessary.
2. Check the connector of M106 for proper drive coupling and correct as necessary.
3. Check the connector between PS107-SDCB J9 for proper connection and correct as necessary.
4. PS107 I/O check, sensor check • Control signal: SDCB J9-6 (ON) • Location of electrical component: FS-540/FS-540SD 4-P
5. M106 operation check • Control signal: SDCB J9-7 to 10 • Location of electrical component: FS-540/FS-540SD 4-P
6. Replace M106.
7. Replace SDCB.
8. Replace FSCB.

Code: C1197
Description: Tri-folding guide motor malfunction (When FS-539SD is installed)
The tri-folding gate home sensor (PS111) is not turned OFF (blocked) or ON (unblocked) even after the set period of time has elapsed while the tri-folding guide motor (M108) is energized.
Causes: • Tri-folding guide motor (M108)
• Tri-folding gate home sensor (PS111)
• SD control board (SDCB)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M108-SDCB J8 for proper connection and correct as necessary.
2. Check the connector of M108 for proper drive coupling and correct as necessary.
3. Check the connector between PS111-SDCB J8 for proper connection and correct as necessary.
4. PS111 I/O check, sensor check • Control signal: SDCB J8-10 (ON) • Location of electrical component: FS-539/FS-539SD 3-P
5. M108 operation check • Control signal: SDCB J8-11 to 14 • Location of electrical component: FS-539/FS-539SD 3-P
6. Replace M108.
7. Replace SDCB.
8. Replace FSCB.

Code: C1197
Description: Tri-folding guide motor malfunction (When FS-540SD is installed)
The tri-folding gate home sensor (PS111) is not turned OFF (blocked) or ON (unblocked) even after the set period of time has elapsed while the tri-folding guide motor (M108) is energized.
Causes: • Tri-folding guide motor (M108)
• Tri-folding gate home sensor (PS111)
• SD control board (SDCB)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M108-SDCB J8 for proper connection and correct as necessary.
2. Check the connector of M108 for proper drive coupling and correct as necessary.
3. Check the connector between PS111-SDCB J8 for proper connection and correct as necessary.
4. PS111 I/O check, sensor check • Control signal: SDCB J8-10 (ON) • Location of electrical component: FS-540/FS-540SD 3-P
5. M108 operation check • Control signal: SDCB J8-11 to 14 • Location of electrical component: FS-540/FS-540SD 3-P
6. Replace M108.
7. Replace SDCB.
8. Replace FSCB.

Code: C11A1
Description: Exit roller pressure/ retraction drive malfunction (When FS-533 is installed)
The pick up roller position sensor (PS105) is not turned ON (blocked) or OFF (unblocked) even after the set period of time has elapsed after the exit roller lift up motor (M104) is energized.
Causes: • Exit roller lift up motor (M104)
• Pick up roller position sensor (PS105)
• FS control board (FSCB)
Troubleshooting Guides: 1. Check the connector between M104-FSCB CN109 for proper connection and correct as necessary.
2. Check the connector of M104 for proper drive coupling and correct as necessary.
3. Check the connector between PS105-FSCB CN110 for proper connection and correct as necessary.
4. PS105 I/O check, sensor check • Control signal: FSCB CN110 • Location of electrical component: FS-533 7-D to E
5. M104 operation check • Control signal: FSCB CN109 • Location of electrical component: FS-533 9-D to E
6. Replace M104.
7. FSCB CP104 conduction check
8. Replace FSCB.

Code: C11A2
Description: Receiving roller retraction motor drive malfunction (When FS-539 or FS-539SD 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 energized.
Causes: • Receiving roller retraction motor (M4)
• Receiving roller retraction sensor (PS11)
• FS control board (FSCB)
Troubleshooting Guides: 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 J5 for proper connection and correct as necessary.
4. PS11 I/O check, sensor check • Control signal: FSCB J5-6 (ON) • Location of electrical component: FS-539/FS-539SD 16-K
5. M4 operation check • Control signal: FSCB J4<A>-1 to 4 • Location of electrical component: FS-539/FS-539SD 13-C
6. Replace M4.
7. Replace FSCB.

Code: C11A2
Description: Receiving roller retraction motor drive malfunction (When FS-540 or FS-540SD 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 energized.
Causes: • Receiving roller retraction motor (M10)
• Receiving roller retraction sensor (PS22)
• FS control board (FSCB)
Troubleshooting Guides: 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 J12-3 (ON) • Location of electrical component: FS-540/FS-540SD 15-D
5. M10 operation check • Control signal: FSCB J12<A>-15 to 16 • Location of electrical component: FS-540/FS-540SD 15-D
6. Replace M10.
7. Replace FSCB.

Code: C11C5
Description: Paper size detect board malfunction (When FS-540+PK-526 or FS-540SD+PK-526 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-539 or FS-539SD is installed)
The route change gate home 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 energized.
Causes: • FNS entry transport motor (M2)
• Route change gate home sensor (PS30)
• FS control board (FSCB)
Troubleshooting Guides: 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 J5 for proper connection and correct as necessary.
4. PS30 I/O check, sensor check • Control signal: FSCB J5-9 (ON) • Location of electrical component: FS-539/FS-539SD 15-K
5. M2 operation check • Control signal: FSCB J9<A>-1 to 4 • Location of electrical component: FS-539/FS-539SD 12-C
6. Replace M2.
7. Replace FSCB.

Code: C11E1
Description: Paper exit switching drive malfunction (When FS-540 or FS-540SD 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 energized.
Causes: • Route change gate motor (M4)
• Route change gate home sensor (PS21)
• FS control board (FSCB)
Troubleshooting Guides: 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 J12-8 (ON) • Location of electrical component: FS-540/FS-540SD 16-A
5. M4 operation check • Control signal: FSCB J21-4 to 5 • Location of electrical component: FS-540/FS-540SD 16-D
6. Replace M4. 7. Replace FSCB.

Code: C11E2
Description: Paper exit switching (JS) drive malfunction (When FS-540 or FS-540SD 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 energized.
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>-14 (ON) • Location of electrical component: FS-540/FS-540SD 15-D
5. M18 operation check • Control signal: FSCB J12<A>-5 to 8 • Location of electrical component: FS-540/FS-540SD 15-D
6. Replace M18.
7. Replace FSCB.

Code: C1402
Description: FS nonvolatile memory error (When FS-533 is installed)
When the main power switch is turned ON, malfunctioning of the nonvolatile memory on the FS control board (FSCB) is detected.
Causes: FS control board (FSCB)
Troubleshooting Guides: 1. Turn OFF the main power switch and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.
2. Rewrite the firmware.
3. Replace FSCB

Code: C1403
Description: PK flash ROM error (When FS-540+PK-526 or FS-540SD+PK-526 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 and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.
2. Rewrite the firmware.
3. Replace PKCB.

Code: C1404
Description: PI flash ROM error (When FS-540+PI-507 or FS-540SD+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 and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.
2. Rewrite the firmware.
3. Replace PIDB.

Code: C2152 … C2156
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
• C2152: The 1st transfer pressure sensor (PS39) is unable to detect ‘switch from retraction to pressure’ or ‘switch from pressure to retraction’ within a given period time after the 1st transfer pressure clutch (CL5) has stared engagement during an initial position return.
• C2153: The 1st transfer pressure sensor (PS39) does not detect “switch from pressure to retraction” within a given period time after 1st transfer pressure clutch (CL5) has stared engagement.
• C2154: The 1st transfer pressure sensor (PS39) does not detect “switch from retraction to pressure” within a given period time after 1st transfer pressure clutch (CL5) has stared engagement.
• C2155: The 1st transfer pressure sensor (PS39) is turned ON (blocked) after the lamps of given time after the 1st transfer pressure clutch (CL5) turned OFF when the release operation is finished.
• C2156: The 1st transfer pressure sensor (PS39) is turned OFF (unblocked) after the laps of given time after the 1st transfer pressure clutch (CL5) turned OFF when the pressing operation is finished.
Causes: • Fusing motor (M3)
• 1st transfer pressure clutch (CL5)
• 1st transfer pressure sensor (PS39)
• Expansion control board (EXCB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between M3-BASEB CN19E 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 PS39-relay CN113-BASEB CN13E for proper connection and correct as necessary.
4. Check the connector between CL5-relay CN118-EXCB CN14EX for proper connection and correct as necessary.
5. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.
6. Check CPUB for proper installation and correct as necessary.
7. PS39 I/O check, sensor check • Control signal: BASEB CN13E-3 (ON) • Location of electrical component: 13-C
8. CL5 load check • Check code: 24 • Multi code: 1, 2, 100, 101, 102, 104, 105, 106 (bizhub C650i), 1, 2, 101, 102, 105, 106 (bizhub C550i), 1, 2, 100, 102, 104, 106 (bizhub C450i) • Control signal: EXCB CN14EX-9 (REM) • Location of electrical component: 17 to 18-P
9. M3 load check • Check code: 45 • Multi code: 1, 2, 3, 4, 6 (bizhub C650i), 1, 3, 4, 6 (bizhub C550i), 1, 2, 4, 6 (bizhub C450i) • Control signal: BASEB CN19EA-6 to 10 • Location of electrical component: 1-C
10. Replace M3.
11. Replace EXCB.
12. Replace CPUB.
13. Replace BASEB.

Code: C2204
Description: Waste toner transport motor failure to turn
The turning detection sensor detects failure to turn for a predetermined number of times while the motor is turning.
Causes: • Waste toner transport motor (M20)
• Waste toner box set sensor (PS100)
• Expansion control board (EXCB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Clean the PS100 if it has toner or paper dust, etc.
2. Replacing the waste toner box.
3. Check the connector between M20-relay CN92-EXCB CN10EX 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 PS100-EXCB CN8EX for proper connection and correct as necessary.
6. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.
7. Check CPUB for proper installation and correct as necessary.
8. PS100 I/O check, sensor check • Control signal: EXCB CN8EX-6 (ON) • Location of electrical component: 20-X
9. M20 load check • Check code: 44 • Multi code: 1 • Control signal: EXCB CN10EX-12 to 15 • Location of electrical component: 22-P
10. Replace M20.
11. Replace EXCB.
12. Replace CPUB.
13. Replace BASEB.

Code: C2253, C2254
Description: • C2253: PC motor failure to turn
• C2254: PC motor turning at abnormal timing
• C2253: The control circuit detects motor failure to turn while the motor is turning.
• C2254: The control circuit detects motor turning while the motor remains stationary.
Causes: • PC motor (M2)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between M2-BASEB CN19E for proper connection and correct as necessary.
2. Check the connector of M2 for proper drive coupling and correct as necessary.
3. Check CPUB for proper installation and correct as necessary.
4. M2 load check • Check code: 41 • Multi code: 1, 2, 3, 4 (bizhub C650i), 1, 3, 4 (bizhub C550i), 1, 2, 4 (bizhub C450i) • Control signal: BASEB CN19EB-1 to 5 • Location of electrical component: 2-C
5. Replace M2.
6. Replace CPUB.
7. Replace BASEB.

Code: C2255, C2256
Description: • C2255: Developing motor failure to turn
• C2256: Developing motor turning at abnormal timing
• C2255: The control circuit detects motor failure to turn while the motor is turning.
• C2256: The control circuit detects motor turning while the motor remains stationary.
Causes: • Developing motor (M27)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between M27-BASEB CN19E for proper connection and correct as necessary.
2. Check the connector of M27 for proper drive coupling and correct as necessary.
3. Check CPUB for proper installation and correct as necessary.
4. M27 load check • Check code: 50 • Multi code: 1, 2, 3, 4 (bizhub C650i), 1, 3, 4 (bizhub C550i), 1, 2, 4 (bizhub C450i) • Control signal: BASEB CN19EB-6 to 10 • Location of electrical component: 2-C
5. Replace M27.
6. Replace CPUB.
7. Replace BASEB.

Code: C2350
Description: Toner suction fan failure to turn
The fan lock signal remains Low for a predetermined continuous period of time while the fan is turning.
Causes: • Toner suction fan (FM11)
• Expansion control board (EXCB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: Procedure
1. Check the connector between FM11-relay CN62-relay CN63-EXCB CN15EX for proper connection and correct as necessary.
2. Check the fan for possible overload and correct as necessary.
3. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.
4. Check CPUB for proper installation and correct as necessary.
5. FM11 load check • Check code: 42 • Multi code: 8 • Control signal: EXCB CN15EX-1 (REM), EXCB CN15EX-3 (LOCK) • Location of electrical component: 25-X
6. Replace FM11.
7. Replace EXCB.
8. Replace CPUB.
9. Replace BASEB.

Code: C2355
Description: Transfer belt cleaner cooling fan failure to turn
The fan lock signal remains Low for a predetermined continuous period of time while the fan is turning.
Causes: • Transfer belt cleaner cooling fan (FM2)
• Expansion control board (EXCB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between FM2-relay CN115-EXCB CN10EX for proper connection and correct as necessary.
2. Check the fan for possible overload and correct as necessary.
3. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.
4. Check CPUB for proper installation and correct as necessary.
5. FM2 load check • Check code: 42 • Multi code: 13, 14 • Control signal: EXCB CN10EX-9 (REM), EXCB CN10EX-11 (LOCK) • Location of electrical component: 22-P
6. Replace FM2.
7. Replace EXCB.
8. Replace CPUB.
9. Replace BASEB.

Code: C2357
Description: DV cooling fan failure to turn
The fan lock signal remains Low for a predetermined continuous period of time while the fan is turning.
Causes: • DV cooling fan (FM19)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between FM19-relay CN804-BASEB CN37E for proper connection and correct as necessary.
2. Check the fan for possible overload and correct as necessary.
3. Check CPUB for proper installation and correct as necessary.
4. FM19 load check • Check code: 42 • Multi code: 15, 16 • Control signal: BASEB CN37E-1 (REM), BASEB CN37E-3 (LOCK) • Location of electrical component: 24-K
5. Replace FM19.
6. Replace CPUB.
7. Replace BASEB.

Code: C2411 … C2414
Description: • C2411: Developing unit/C new article release
• C2412: Developing unit/M new article release
• C2413: Developing unit/Y new article release
• C2414: Developing unit/K new article release
The status with the new unit is not cleared after the new developing unit is set.
Causes: • Developing unit/C,M,Y,K
• Expansion control board (EXCB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Reinstall the developing unit.
2. Check the connector between the developing unit/C-relay CN251-relay CN248-EXCB CN6EX for proper connection and correct as necessary. (C2411)
3. Check the connector between the developing unit/M-relay CN250-relay CN248-EXCB CN6EX for proper connection and correct as necessary. (C2412)
4. Check the connector between the developing unit/Y-relay CN249-relay CN248-EXCB CN6EX for proper connection and correct as necessary. (C2413)
5. Check the connector between the developing unit/K-relay CN252-relay CN25-EXCB CN4EX for proper connection and correct as necessary. (C2414)
6. Check the connector between EXCB CN1EX-BASEB CN11E for proper connection and correct as necessary.
7. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.
8. Check CPUB for proper installation and correct as necessary.
9. Replace the corresponding developing unit.
10. Replace EXCB.
11. Replace CPUB.
12. Replace BASEB.

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 higher 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/C,M,Y
• Toner cartridge/C,M,Y
• PH unit
• Toner empty sensor/Y (PS34)
• Toner empty sensor/M (PS33)
• Toner empty sensor/C (PS32)
• Toner cartridge motor/YM (M10)
• Toner cartridge motor/CK (M25)
• Toner supply motor/Y (M9)
• Toner supply motor/M (M8)
• Toner supply motor/C (M7)
• Expansion control board (EXCB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Perform image troubleshooting procedure if image density is low.
2. Reinstall the developing unit.
3. Reinstall the toner cartridge.
4. Check the connector between the developing unit/C-relay CN251-relay CN248-EXCB CN6EX for proper connection and correct as necessary. (C2551)
5. Check the connector between the developing unit/M-relay CN250-relay CN248-EXCB CN6EX for proper connection and correct as necessary. (C2553)
6. Check the connector between the developing unit/Y-relay CN249-relay CN248-EXCB CN6EX for proper connection and correct as necessary. (C2555)
7. Check the connector between EXCB CN1EX-BASEB CN11E for proper connection and correct as necessary.
8. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.
9. Check CPUB for proper installation and correct as necessary.
10. M10, M25 operation check • Control signal: EXCB CN11EX-5 to 8 (M10), EXCB CN11EX-1 to 4 (M25) • Location of electrical component: 15-P
11. M7, M8, M9 operation check • Control signal: EXCB CN11EX-17 to 20 (M7), EXCB CN11EX-13 to 16 (M8), EXCB CN11EX-9 to 12 (M9) • Location of electrical component: 16-P
12. If the toner empty sensor and its surroundings inside the sub hopper are dirtied with toner, clean them.
13. Replace the corresponding developing unit.
14. Replace EXCB.
15. Replace CPUB.
16. Replace BASEB.

Code: C2552, C2554
Description: • C2552: Abnormally high toner density detected cyan TCR sensor
• C2554: Abnormally high toner density detected magenta 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/C,M,Y,K
• Toner cartridge/C,M,Y,K
• Expansion control board (EXCB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Reinstall the developing unit.
2. Reinstall the toner cartridge.
2. Reinstall the toner cartridge. 3. Check the connector between the developing unit/C-relay CN251-relay CN248-EXCB CN6EX for proper connection and correct as necessary. (C2552)
4. Check the connector between the developing unit/M-relay CN250-relay CN248-EXCB CN6EX for proper connection and correct as necessary. (C2554)
5. Check the connector between the developing unit/Y-relay CN249-relay CN248-EXCB CN6EX for proper connection and correct as necessary. (C2556)
6. Check the connector between the developing unit/K-relay CN252-relay CN25-EXCB CN4EX for proper connection and correct as necessary. (C2558)
7. Check the connector between EXCB CN1EX-BASEB CN11E for proper connection and correct as necessary.
8. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.
9. Check CPUB for proper installation and correct as necessary.
10. Replace the corresponding developing unit.
11. Replace EXCB.
12. Replace CPUB.
13. Replace BASEB.

Code: C2556, C2558
Description: • C2556: Abnormally high toner density detected yellow TCR sensor
• C2558: 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/C,M,Y,K
• Toner cartridge/C,M,Y,K
• Expansion control board (EXCB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Reinstall the developing unit.
2. Reinstall the toner cartridge.
2. Reinstall the toner cartridge. 3. Check the connector between the developing unit/C-relay CN251-relay CN248-EXCB CN6EX for proper connection and correct as necessary. (C2552)
4. Check the connector between the developing unit/M-relay CN250-relay CN248-EXCB CN6EX for proper connection and correct as necessary. (C2554)
5. Check the connector between the developing unit/Y-relay CN249-relay CN248-EXCB CN6EX for proper connection and correct as necessary. (C2556)
6. Check the connector between the developing unit/K-relay CN252-relay CN25-EXCB CN4EX for proper connection and correct as necessary. (C2558)
7. Check the connector between EXCB CN1EX-BASEB CN11E for proper connection and correct as necessary.
8. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.
9. Check CPUB for proper installation and correct as necessary.
10. Replace the corresponding developing unit.
11. Replace EXCB.
12. Replace CPUB.
13. Replace BASEB.

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 higher 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
• PH unit
• Toner empty sensor/K (PS31)
• Toner cartridge motor/CK (M25)
• Toner supply motor/K (M6)
• Expansion control board (EXCB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Perform image troubleshooting procedure if image density is low.
2. Reinstall the developing unit/K.
3. Reinstall the toner cartridge/K.
4. Check the connector between the developing unit/K-relay CN252-relay CN25-EXCB CN4EX for proper connection and correct as necessary.
5. Check the connector between EXCB CN1EX-BASEB CN11E for proper connection and correct as necessary.
6. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.
7. Check CPUB for proper installation and correct as necessary.
8. M25 operation check • Control signal: EXCB CN11EX-1 to 4 • Location of electrical component: 15-P
9. M6 operation check • Control signal: EXCB CN10EX-16 to 19 • Location of electrical component: 23-P
10. If the toner empty sensor and its surroundings inside the sub hopper are dirtied with toner, clean them.
11. Replace the developing unit/K.
12. Replace EXCB.
13. Replace CPUB.
14. Replace BASEB.

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: • Developing unit/C,M,Y
• Toner cartridge motor/YM (M10)
• Toner cartridge motor/CK (M25)
• Toner supply motor/Y (M9)
• Toner supply motor/M (M8)
• Toner supply motor/C (M7)
• Expansion control board (EXCB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Reinstall the developing unit.
2. Check the connector between the developing unit/C-relay CN251-relay CN248-EXCB CN6EX for proper connection and correct as necessary. (C2559)
3. Check the connector between the developing unit/M-relay CN250-relay CN248-EXCB CN6EX for proper connection and correct as necessary. (C255A)
4. Check the connector between the developing unit/Y-relay CN249-relay CN248-EXCB CN6EX for proper connection and correct as necessary. (C255B)
5. Check the connector between EXCB CN1EX-BASEB CN11E for proper connection and correct as necessary.
6. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.
7. Check CPUB for proper installation and correct as necessary.
8. M10, M25 operation check • Control signal: EXCB CN11EX-5 to 8 (M10), EXCB CN11EX-1 to 4 (M25) • Location of electrical component: 15-P
9. M7, M8, M9 operation check • Control signal: EXCB CN11EX-17 to 20 (M7), EXCB CN11EX-13 to 16 (M8), EXCB CN11EX-9 to 12 (M9) • Location of electrical component: 16-P
10. Replace the corresponding developing unit.
11. Replace EXCB.
12. Replace CPUB.
13. Replace BASEB.

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
• Toner cartridge motor/CK (M25)
• Toner supply motor/K (M6)
• Expansion control board (EXCB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Reinstall the developing unit/K.
2. Check the connector between the developing unit/K-relay CN252-relay CN25-EXCB CN4EX for proper connection and correct as necessary.
3. Check the connector between EXCB CN1EX-BASEB CN11E for proper connection and correct as necessary.
4. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.
5. Check CPUB for proper installation and correct as necessary.
6. M25 operation check • Control signal: EXCB CN11EX-1 to 4 • Location of electrical component: 15-P
7. M6 operation check • Control signal: EXCB CN10EX-16 to 19 • Location of electrical component: 23-P
8. Replace the developing unit/K.
9. Replace EXCB.
10. Replace CPUB.
11. Replace BASEB.

Code: C2561 … C2564
Description: • C2561: Cyan TCR sensor failure
• C2562: Magenta TCR sensor failure
• C2563: Yellow TCR sensor failure
• C2564: Black TCR sensor failure
• Alarm signals for each TCR sensor is detected more than the predetermined number of times.
• This detection is used for detecting disconnection of TCR sensor connector.
Causes: • Developing unit/C,M,Y,K
• Expansion control board (EXCB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Reinstall the developing unit.
2. Check the connector between the developing unit/C-relay CN251-relay CN248-EXCB CN6EX for proper connection and correct as necessary. (C2561)
3. Check the connector between the developing unit/M-relay CN250-relay CN248-EXCB CN6EX for proper connection and correct as necessary. (C2562)
4. Check the connector between the developing unit/Y-relay CN249-relay CN248-EXCB CN6EX for proper connection and correct as necessary. (C2563)
5. Check the connector between the developing unit/K-relay CN252-relay CN25-EXCB CN4EX for proper connection and correct as necessary. (C2564)
6. Check the connector between EXCB CN1EX-BASEB CN11E for proper connection and correct as necessary.
7. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.
8. Check CPUB for proper installation and correct as necessary.
9. Replace the corresponding developing unit.
10. Replace EXCB.
11. Replace CPUB.
12. Replace BASEB.

Code: C2650
Description: Main backup media 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 backup board is not mounted.
Causes: • Backup board (ERB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between ERB CN1-BASEB CN27E for proper connection and correct as necessary.
2. Check CPUB for proper installation and correct as necessary.
3. Replace CPUB.
4. Replace BASEB.
5. Replace ERB. 1. Replace the current ERB with a new one. 2. Replace the following components with new ones. When the transfer belt unit and the fusing unit have been replaced with new ones, perform [Service Mode] -> [Counter] -> [Life] -> [New Release]. When the transfer roller has been replaced with a new one, perform the counter reset in [Service Mode] -> [Counter] -> [Life]. • Developing unit • Drum unit • Toner cartridge • Transfer belt unit • Fusing unit • Transfer roller • Feed roller, pick-up roller, separation roller (including options) 3. Turn ON the main power switch and check to see that warm-up is started. Make sure that malfunction codes other than C2650 or improper IU/TC placement is not detected. 4. Make the specified readjustments.
6. If the above actions do not solve the problem, contact KM.

Code: C2A11 … C2A14
Description: • C2A11: Drum unit/C new release failure
• C2A12: Drum unit/M new release failure
• C2A13: Drum unit/Y new release failure
• C2A14: Drum unit/K new release failure
The status with the new unit is not cleared after the new drum unit is set.
Causes: • Drum unit/C,M,Y,K
• Expansion control board (EXCB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Clean the connection between the drum unit and the main body if dirty.
2. Reinstall the drum unit.
3. Check the connector between the drum unit/C-relay CN47-relay CN149-EXCB CN4EX for proper connection and correct as necessary. (C2A11)
4. Check the connector between the drum unit/M-relay CN46-relay CN149-EXCB CN4EX for proper connection and correct as necessary. (C2A12)
5. Check the connector between the drum unit/Y-relay CN45-relay CN149-EXCB CN4EX for proper connection and correct as necessary. (C2A13)
6. Check the connector between the drum unit/K-relay CN48-relay CN149-EXCB CN4EX for proper connection and correct as necessary. (C2A14)
7. Check the connector between EXCB CN1EX-BASEB CN11E for proper connection and correct as necessary.
8. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.
9. Check CPUB for proper installation and correct as necessary.
10. Replace the corresponding drum unit.
11. Replace EXCB.
12. Replace CPUB.
13. Replace BASEB.

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/C,M,Y,K
• Expansion control board (EXCB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Clean the connection between the toner cartridge and the main body if dirty.
2. Check the connector between the toner cartridge/C-relay CN82-relay CN79-EXCB CN5EX for proper connection and correct as necessary. (C2A21)
3. Check the connector between the toner cartridge/M-relay CN81-relay CN79-EXCB CN5EX for proper connection and correct as necessary. (C2A22)
4. Check the connector between the toner cartridge/Y-relay CN80-relay CN79-EXCB CN5EX for proper connection and correct as necessary. (C2A23)
5. Check the connector between the toner cartridge/K-relay CN83-relay CN79-EXCB CN5EX for proper connection and correct as necessary. (C2A24)
6. Check the connector between EXCB CN1EX-BASEB CN11E for proper connection and correct as necessary.
7. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.
8. Check CPUB for proper installation and correct as necessary.
9. Reinstall the toner cartridge.
10. Check the harness for proper connection and correct as necessary.
11. Replace the corresponding toner cartridge.
12. Replace EXCB.
13. Replace CPUB.
14. Replace BASEB.

Code: C3101, C3103
Description: • C3101: Pressure roller pressure failure
• C3103: Pressure roller release failure
• C3101: The fusing pressure home sensor (PS38) is not turned ON (blocked) even after the lapse of a predetermined period of time after the fusing pressure motor (M11) has started rotating during pressure by the pressure roller.
• C3103: The fusing pressure home sensor (PS38) is not turned OFF (unblocked) even after the lapse of a predetermined period of time after the fusing pressure motor (M11) has started rotating during retraction of the pressure roller.
Causes: • Fusing unit
• Fusing pressure motor (M11)
• Fusing pressure home sensor (PS38)
• Expansion control board (EXCB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between M11-relay CN112-EXCB CN14EX for proper connection and correct as necessary.
2. Check the connector between the fusing unit-relay CN95, CN96-BASEB CN4E for proper connection and correct as necessary.
3. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.
4. Check CPUB for proper installation and correct as necessary.
5. PS38 I/O check, sensor check • Control signal: BASEB CN4E-3 (ON) • Location of electrical component: 7-C
6. M11 load check • Check code: 45 • Multi code: 7, 8, 9 • Control signal: EXCB CN14EX-11 to 14 • Location of electrical component: 18-P
7. Replace M11.
8. Replace the fusing unit.
9. Replace EXCB.
10. Replace CPUB.
11. Replace BASEB.

Code: C3104
Description: Fusing shutter failure (bizhub C650i/C550i)
• The fusing shutter home sensor (PS47) is not turned OFF (unblocked) even after the lapse of a predetermined period of time after the fusing shutter motor (M15) is activated when the shutter is completely opened.
• The fusing shutter home sensor (PS47) is not turned ON (blocked) even after the lapse of a predetermined period of time after the fusing shutter motor (M15) is activated when the shutter is completely closed.
Causes: • Fusing shutter motor (M15)
• Fusing shutter home sensor (PS47)
• Expansion control board (EXCB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between M15-relay CN164-EXCB CN14EX 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 PS47-relay CN9-EXCB CN13EX for proper connection and correct as necessary.
4. Check CPUB for proper installation and correct as necessary.
5. PS47 I/O check, sensor check • Control signal: EXCB CN13EX-12 (ON) • Location of electrical component: 16-X
6. M15 load check • Check code: 45 • Multi code: 10, 11 • Control signal: EXCB CN14EX-15 to 18 • Location of electrical component: 18-P
7. Replace M15.
8. Replace EXCB.
9. Replace CPUB.
10. Replace BASEB.

Code: C3201, C3202
Description: • C3201: Fusing motor failure to turn
• C3202: Fusing motor turning at abnormal timing
• C3201: The control circuit detects motor failure to turn while the motor is turning.
• C3202: The control circuit detects motor turning while the motor remains stationary.
Causes: • Fusing unit
• Fusing motor (M3)
• CPU board (CPUB)
• Base board (BASEB)
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 M3-BASEB CN19E for proper connection and correct as necessary.
4. Check the M3 for possible overload and correct as necessary.
5. Check CPUB for proper installation and correct as necessary.
6. M3 load check • Check code: 45 • Multi code: 1, 2, 3, 4, 6 (bizhub C650i), 1, 3, 4, 6 (bizhub C550i), 1, 2, 4, 6 (bizhub C450i) • Control signal: BASEB CN19EA-6 to 10 • Location of electrical component: 1-C
7. Replace M3.
8. Replace the fusing unit.
9. Replace CPUB.
10. Replace BASEB.

Code: C3203
Description: Fusing motor torque failure
When the printing ends, the fusing motor torque value exceeds the predetermined value.
Causes: • Fusing motor (M3)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between M3-BASEB CN19E for proper connection and correct as necessary.
2. Check the connector of M3 for proper drive coupling and correct as necessary.
3. Check CPUB for proper installation and correct as necessary.
4. M3 load check • Check code: 45 • Multi code: 1, 2, 3, 4, 6 (bizhub C650i), 1, 3, 4, 6 (bizhub C550i), 1, 2, 4, 6 (bizhub C450i) • Control signal: BASEB CN19EA-6 to 10 • Location of electrical component: 1-C
5. Replace M3.
6. Replace CPUB.
7. Replace BASEB.

Code: C3302
Description: Paper cooling fan failure to turn
The fan lock signal remains Low for a predetermined continuous period of time while the fan is turning.
Causes: • Paper cooling fan (FM8)
• Expansion control board (EXCB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: Procedure
1. Check the connector between FM8-relay CN27-relay CN28-EXCB CN14EX for proper connection and correct as necessary.
2. Check the fan for possible overload and correct as necessary.
3. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.
4. Check CPUB for proper installation and correct as necessary.
5. FM8 load check • Check code: 42 • Multi code: 9, 10 • Control signal: EXCB CN14EX-1 (REM), EXCB CN14EX-3 (LOCK) • Location of electrical component: 17-P
6. Replace FM8.
7. Replace EXCB.
8. Replace CPUB.
9. Replace BASEB.

Code: C3306
Description: Fusing edge cooling fan/Fr failure to fr turn (bizhub C650i/C550i)
The fan lock signal remains Low for a predetermined continuous period of time while the fan is turning.
Causes: • Fusing edge cooling fan/Fr (FM21)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between FM21-relay CN162-relay CN161-BASEB CN22E for proper connection and correct as necessary.
2. Check the fan for possible overload and correct as necessary.
3. Check CPUB for proper installation and correct as necessary.
4. FM21 load check • Check code: 42 • Multi code: 19, 20 • Control signal: BASEB CN22E-13 (REM), BASEB CN22E-15 (LOCK) • Location of electrical component: 12-C
5. Replace FM21.
6. Replace CPUB.
7. Replace BASEB.

Code: C3307
Description: Fusing edge cooling fan/Rr failure to fr turn (bizhub C650i/C550i)
The fan lock signal remains Low for a predetermined continuous period of time while the fan is turning.
Causes: • Fusing edge cooling fan/Rr (FM22)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between FM22-relay CN163-relay CN161-BASEB CN22E for proper connection and correct as necessary.
2. Check the fan for possible overload and correct as necessary.
3. Check CPUB for proper installation and correct as necessary.
4. FM22 load check • Check code: 42 • Multi code: 19, 20 • Control signal: BASEB CN22E-16 (REM), BASEB CN22E-18 (LOCK) • Location of electrical component: 13-C
5. Replace FM22.
6. Replace CPUB.
7. Replace BASEB.

Code: C3425
Description: Fusing warm-up trouble
• Detected temperature of the heating roller temperature sensor (TEMS) does not go up a given range of temperature even after a lapse of given period of time at warm up.
• The temperature detected by the heating roller temperature sensor (TEMS) does not shift from the prestandby state even after the lapse of a predetermined period of time after the completion of warm-up.
Causes: • Fusing unit
• Heating roller temperature sensor (TEMS)
• DC power supply (DCPU)
• CPU board (CPUB)
• Base board (BASEB)
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 the fusing unit-relay CN95, CN96-BASEB CN4E for proper connection and correct as necessary.
4. Check the connector between BASEB CN2E-DCPU CN7 for proper connection and correct as necessary.
5. Check CPUB for proper installation and correct as necessary.
6. Replace the fusing unit.
7. Replace CPUB.
8. Replace BASEB.
9. Replace DCPU. (bizhub C650i/C550i / bizhub C450i)

Code: C3722, C3725, C3726
Description: • C3722: Fusing abnormally high temperature detection (Edge of the heating roller)
• C3725: Fusing abnormally high temperature detection (Main of the heating roller)
• C3726: Fusing abnormally high temperature detection (Center of the heating roller)
• C3722: Detected temperature of the heating roller thermistor/Edg (TH1) goes beyond a given temperature for a given period of time consecutively.
• C3725: Detected temperature of the heating roller temperature sensor (TEMS) goes beyond a given temperature for a given period of time consecutively. • At the first time the high temperature abnormally is detected after the main power switch is turned on, Controller JAM 99-15 (heating roller temperature sensor abnormally high temperature detection) will be displayed. From the 2nd time that the high temperature abnormally is detected, the trouble code C3725 will be displayed.
• C3726: Detected temperature of the heating roller thermistor/Ctr (TH2) goes beyond a given temperature for a given period of time consecutively.
Causes: • Fusing unit
• C3722: Heating roller thermistor/Edg (TH1)
• C3725: Heating roller temperature sensor (TEMS)
• C3726: Heating roller thermistor/Ctr (TH2)
• CPU board (CPUB)
• Base board (BASEB)
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 the fusing unit-relay CN95-BASEB CN4E for proper connection and correct as necessary.
4. Check CPUB for proper installation and correct as necessary.
5. Replace the fusing unit.
6. Replace CPUB.
7. Replace BASEB.

Code: C3737
Description: Fusing abnormally high temperature detection hard protector (Center 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 temperature sensor (TEMS)
• CPU board (CPUB)
• Base board (BASEB)
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 the fusing unit-relay CN95-BASEB CN4E for proper connection and correct as necessary.
4. Check CPUB for proper installation and correct as necessary.
5. Replace the fusing unit.
6. Replace CPUB.
7. Replace BASEB.

Code: C3825, C3826
Description: • C3825: Fusing abnormally low temperature detection (Main of the heating roller)
• C3826: Fusing abnormally low temperature detection (Center of the heating roller)
• C3825: The heating roller temperature sensor (TEMS) continues to detect a temperature lower than a predetermined one for a predetermined period of time.
• C3826: The heating roller thermistor/Ctr (TH2) continues to detect a temperature lower than a predetermined one for a predetermined period of time.
Causes: • Fusing unit
• C3825: Heating roller temperature sensor (TEMS)
• C3826: Heating roller thermistor/Ctr (TH2)
• CPU board (CPUB)
• Base board (BASEB)
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 the fusing unit-relay CN95-BASEB CN4E for proper connection and correct as necessary.
4. Check CPUB for proper installation and correct as necessary.
5. Replace the fusing unit.
6. Replace CPUB.
7. Replace BASEB.

Code: C3922, C3925, C3926
Description: • C3922: Fusing sensor wire breaks detection (Edge of the heating roller)
• C3925: Fusing sensor wire breaks detection (Main 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 thermistor/Edg (TH1) 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 (TEMS) 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 thermistor/Ctr (TH2) 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
• C3922: Heating roller thermistor/Edg (TH1)
• C3925: Heating roller temperature sensor (TEMS)
• C3926: Heating roller thermistor/Ctr (TH2)
• CPU board (CPUB)
• Base board (BASEB)
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 the fusing unit-relay CN95-BASEB CN4E for proper connection and correct as necessary.
4. Check CPUB for proper installation and correct as necessary.
5. Replace the fusing unit.
6. Replace CPUB.
7. Replace BASEB.

Code: C392B
Description: Fusing sensor wire breaks detection (difference of temperature)
The difference between the temperature corrected by the heating roller thermistor/Edg (TH1) and the temperature detected by the heating roller thermistor/Ctr (TH2) exceeds a predetermined value.
Causes: • Fusing unit
• Heating roller thermistor/Edg (TH1)
• Heating roller thermistor/Ctr (TH2)
• CPU board (CPUB)
• Base board (BASEB)
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 the fusing unit-relay CN95-BASEB CN4E for proper connection and correct as necessary.
4. Check CPUB for proper installation and correct as necessary.
5. Replace the fusing unit.
6. Replace CPUB.
7. Replace BASEB.

Code: C40A2 … C40C5
Description: • C40A2: Mechanical controller PF communication data error
• C40A3: Mechanical controller PF transmission timeout
• C40A4: Mechanical controller PF communication pulse error
• C40A5: QSPI communication clock switching error
• C40A6: Mechanical controller ASIC communication error
• C40C3: CTL PF transmission timeout 1
• C40C5: CTL PF transmission timeout 2
A CPU communication error is detected.
Causes: • CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Turn OFF the main power switch and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.
2. Check CPUB for proper installation and correct as necessary.
3. Rewrite the firmware.
4. Replace CPUB.
5. BASEB F8E conduction check
6. Replace BASEB.

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 and changing rotation speed the polygon motor.
• Motor lock signal detects HIGH for a given period time consecutively during the polygon motor is rotating.
Causes: • PH unit
• Expansion control board (EXCB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between the PH unit-relay CN306-EXCB CN10EX for proper connection and correct as necessary.
2. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.
3. Check CPUB for proper installation and correct as necessary.
4. Replace the PH unit.
5. Replace EXCB.
6. Replace CPUB.
7. Replace BASEB.

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
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between the PH unit-relay CN307-BASEB CN17E for proper connection and correct as necessary.
2. Check CPUB for proper installation and correct as necessary.
3. Replace the PH unit.
4. Replace CPUB.
5. Replace BASEB.

Code: C5102, C5103
Description: • C5102: Transport motor failure to turn
• C5103: Transport motor turning at abnormal timing
• C5102: The control circuit detects motor failure to turn while the motor is turning.
• C5103: The control circuit detects motor turning while the motor remains stationary.
Causes: • Transport motor (M1)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between M1-BASEB CN19E for proper connection and correct as necessary.
2. Check the loading status of the main drive, and correct the error as necessary.
3. Check CPUB for proper installation and correct as necessary.
4. M1 load check • Check code: 40 • Multi code: 1, 2, 3, 4 (bizhub C650i), 1, 3, 4 (bizhub C550i), 1, 2, 4 (bizhub C450i) • Control signal: BASEB CN19EA-1 to 5 • Location of electrical component: 1-C
5. Replace M1.
6. Replace CPUB.
7. Replace BASEB.

Code: C5351
Description: PH/power supply cooling fan failure to turn
The fan lock signal remains Low for a predetermined continuous period of time while the fan is turning.
Causes: • PH/power supply cooling fan (FM1)
• Expansion control board (EXCB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: Procedure
1. Check the connector between FM1-relay CN26-EXCB CN10EX for proper connection and correct as necessary.
2. Check the fan for possible overload and correct as necessary.
3. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.
4. Check CPUB for proper installation and correct as necessary.
5. FM1 load check • Check code: 42 • Multi code: 1 • Control signal: EXCB CN10EX-6 (REM), EXCB CN10EX-8 (LOCK) • Location of electrical component: 22-P
6. Replace FM1.
7. Replace EXCB.
8. Replace CPUB.
9. Replace BASEB.

Code: C5355
Description: Toner cartridge cooling fan failure to turn
The fan lock signal remains Low for a predetermined continuous period of time while the fan is turning.
Causes: • Toner cartridge cooling fan (FM4)
• Expansion control board (EXCB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between FM4-relay CN78-EXCB CN14EX for proper connection and correct as necessary.
2. Check the fan for possible overload and correct as necessary.
3. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.
4. Check CPUB for proper installation and correct as necessary.
5. FM4 load check • Check code: 42 • Multi code: 2, 3 • Control signal: EXCB CN14EX-4 (REM), EXCB CN14EX-6 (LOCK) • Location of electrical component: 17-P
6. Replace FM4.
7. Replace EXCB.
8. Replace CPUB.
9. Replace BASEB.

Code: C5358
Description: HaCS power supply cooling fan failure to turn
The fan lock signal remains Low for a predetermined continuous period of time while the fan is turning.
Causes: • HaCS power supply cooling fan (FM5)
• Expansion control board (EXCB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between FM5-EXCB CN9EX for proper connection and correct as necessary.
2. Check the fan for possible overload and correct as necessary.
3. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.
4. Check CPUB for proper installation and correct as necessary.
5. FM5 load check • Check code: 42 • Multi code: 17, 18 • Control signal: EXCB CN9EX-1 (REM), EXCB CN9EX-3 (LOCK) • Location of electrical component: 21-X
6. Replace FM5.
7. Replace EXCB.
8. Replace CPUB.
9. Replace BASEB.

Code: C5360
Description: Clean unit fan failure to turn (When CU-102 is installed)
The fan lock signal remains Low for a predetermined continuous period of time while the fan is turning.
Causes: • Exhaust fan/1 (FM14)
• Exhaust fan/2 (FM15)
• Clean unit drive board (CUDB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between CUDB CN1-relay CN28D-BASEB CN28E for proper connection and correct as necessary.
2. Check the connector between FM14-relay CN182-CUDB CN3, FM15-relay CN165-CUDB CN2 for proper connection and correct as necessary.
3. Check the fan for possible overload and correct as necessary.
4. Check CPUB for proper installation and correct as necessary.
5. FM14 load check • Check code: 42 • Multi code: 9, 10 • Control signal: CUDB CN3 • Location of electrical component: 27-L
6. FM15 load check • Check code: 42 • Multi code: 9, 10 • Control signal: CUDB CN2 • Location of electrical component: 28-L
7. Replace the defective fan. (FM14 / FM15)
8. Replace CUDB.
9. Replace CPUB.
10. Replace BASEB.

Code: C5361
Description: UFP scavenging fan/Fr failure to turn
The fan lock signal remains Low for a predetermined continuous period of time while the fan is turning.
Causes: • UFP scavenging fan/Fr (FM17)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: Procedure
1. Check the connector between FM17-relay CN801-relay CN5-BASEB CN22E for proper connection and correct as necessary.
2. Check the fan for possible overload and correct as necessary.
3. Check CPUB for proper installation and correct as necessary.
4. FM17 load check • Check code: 42 • Multi code: 12 • Control signal: BASEB CN22E-7 (REM), BASEB CN22E-9 (LOCK) • Location of electrical component: 12-C
5. Replace FM17.
6. Replace CPUB.
7. Replace BASEB.

Code: C5362
Description: UFP scavenging fan/Rr failure to turn (bizhub C650i/C550i)
The fan lock signal remains Low for a predetermined continuous period of time while the fan is turning.
Causes: • UFP scavenging fan/Rr (FM18)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between FM18-relay CN802-relay CN5-BASEB CN22E for proper connection and correct as necessary.
2. Check the fan for possible overload and correct as necessary.
3. Check CPUB for proper installation and correct as necessary.
4. FM18 load check • Check code: 42 • Multi code: 12 • Control signal: BASEB CN22E-10 (REM), BASEB CN22E-12 (LOCK) • Location of electrical component: 12-C
5. Replace FM18.
6. Replace CPUB.
7. Replace BASEB.

Code: C5363
Description: Tacking fan failure to turn (When FS-533+MK-607 is installed) (bizhub C550i/C450i)
The fan lock signal remains Low for a predetermined continuous period of time while the fan is turning.
Causes: • Paper exit cooling fan (FM23)
• Expansion control board (EXCB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.
2. Check the connector between FM23-relay CN710-EXCB CN15EX for proper connection and correct as necessary.
3. Check the fan for possible overload and correct as necessary.
4. Check CPUB for proper installation and correct as necessary.
5. FM23 load check • Check code: 42 • Multi code: 21, 22 • Control signal: EXCB CN15EX-4 (REM), EXCB CN15EX-6 (LOCK) • Location of electrical component: 26-X
6. Replace FM23.
7. Replace EXCB.
8. Replace CPUB.
9. Replace BASEB.

Code: C5370
Description: Rear side cooling fan failure to turn
The fan lock signal remains Low for a predetermined continuous period of time while the fan is turning.
Causes: • Rear side cooling fan (FM3)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between FM3-relay CN193-BASEB CN17 for proper connection and correct as necessary.
2. Check the fan for possible overload and correct as necessary.
3. Check CPUB for proper installation and correct as necessary.
4. FM3 operation check • Control signal: BASEB CN17-3 (LOCK), BASEB CN17-4 (PWM) • Location of electrical component: 24-D to E
5. Replace FM3.
6. Replace CPUB.
7. BASEB F1 conduction check
8. Replace BASEB.

Code: C5372
Description: MFP control board CPU temperature failure
Temperature failure of CPU on the CPU board was detected.
Causes: CPU board (CPUB)
Troubleshooting Guides: 1. Reboot the machine.
2. Check for clogging in the ventilation path between the CPUB and the PH/power supply cooling fan, and correct as necessary.
3. Replace CPUB.

Code: C5501
Description: AC signal abnormality (bizhub C450i)
The zero cross signal is not input during fusing phase control.
Causes: • Fusing unit
• DC power supply (DCPU)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the fusing unit for correct installation (whether it is secured in position).
2. Check the connector between the fusing unit-relay CN95-BASEB CN4E for proper connection and correct as necessary.
3. Check the connector between DCPU CN7-BASEB CN2E for proper connection and correct as necessary.
4. Check CPUB for proper installation and correct as necessary.
5. Replace the fusing unit.
6. Replace CPUB.
7. Replace BASEB.
8. Replace DCPU. (bizhub C650i/C550i / bizhub C450i)

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

Code: C5603
Description: Expansion control board communication error
Communication error is detected in expansion control board.
Causes: • Expansion control board (EXCB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Reboot the machine.
2. Check the connector between EXCB CN1EX-BASEB CN11E for proper connection and correct as necessary.
3. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.
4. Check CPUB for proper installation and correct as necessary.
5. Replace EXCB.
6. Replace CPUB.
7. Replace BASEB.

Code: C5605, C5606
Description: • C5605: Engine communication data error
• C5606: Engine transmission timeout
A communication error is detected between CPUs.
Causes: • CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Turn OFF the main power switch and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.
2. Check CPUB for proper installation and correct as necessary.
3. Rewrite the firmware.
4. Replace CPUB.
5. Replace BASEB.

Code: C5610
Description: PH LD drive communication error
LD drive write data and read data disagree with each other a predetermined number of consecutive times.
Causes: • PH unit
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Reboot the machine.
2. Check the connector between BASEB CN17E-relay CN307-PH unit for proper connection and correct as necessary.
3. Check CPUB for proper installation and correct as necessary.
4. Replace the PH unit.
5. Replace CPUB.
6. Replace BASEB.

Code: C5620
Description: Mechanical controller WDT error
Communication error is detected in mechanical controller ASIC.
Causes: • CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Turn OFF the main power switch and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.
2. Check CPUB for proper installation and correct as necessary.
3. Rewrite the firmware.
4. Replace CPUB.
5. Replace BASEB.

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)
• CPU board (CPUB)
• Base board (BASEB)
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 CN3DF-BASEB CN9E for proper connection and correct as necessary.
3. Check CPUB for proper installation and correct as necessary.
4. Replace DFCB.
5. Replace CPUB.
6. Replace BASEB.

Code: C6002
Description: DF related configuration error 2
Inconsistency in the configuration with the installed DF is detected on the main body.
Causes: • DF control board (DFCB)
• CPU board (CPUB)
• Base board (BASEB)
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 CN3DF-BASEB CN9E if faulty.
3. Check CPUB for proper installation and correct as necessary.

Code: C6102, C6103
Description: • C6102: Drive system home sensor malfunction
• C6103: Slider over running
C6102: • The scanner home sensor (PS201) is unable to detect the scanner located at its home position. • The scanner home sensor (PS201) is unable to detect a scanner even when the scanner motor (M201) has been driven to move the scanner over the maximum travelling distance. • The scanner home sensor (PS201) detects the scanner when the scanner has moved the maximum travelling distance from the position, at which it blocks the scanner home sensor (PS201).
C6103: The scanner home sensor (PS201) 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)
• CPU board (CPUB)
• Base board (BASEB)
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 M201-SCDB CN4 for proper connection and correct as necessary.
5. Check the connector between PS201-SCDB CN6 for proper connection and correct as necessary.
6. Check the connector between SCDB CN2-BASEB CN6E for proper connection and correct as necessary.
7. Check CPUB for proper installation and correct as necessary.
8. PS201 I/O check, sensor check • Control signal: SCDB CN6-3 (ON) • Location of electrical component: 13-P
9. M201 operation check • Control signal: SCDB CN4-1 to 4 • Location of electrical component: 13-P
10. Replace SCDB.
11. Replace CPUB.
12. Replace BASEB.

Code: C6104, C6105
Description: • C6104: Back side cleaning home sensor abnormality (initial)
• C6105: Back side cleaning home sensor abnormality (normal)
C6104: • The CIS cleaning 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 CIS cleaning sensor (PS9) does not change from L to H 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 CIS cleaning sensor (PS9) error is detected.
Causes: • CIS cleaning sensor (PS9)
• CIS cleaning motor (M7)
• DF control board (DFCB)
Troubleshooting Guides: 1. Check if the opening and closing guide is firmly closed.
2. Check the connector between M7-relay CN61-DFCB CN14 for proper connection and correct as necessary.
3. Check the connector of M7 for proper drive coupling and correct as necessary.
4. Check the connector between PS9-relay CN121-DFCB CN18 for proper connection and correct as necessary.
5. PS9 I/O check, sensor check • Control signal: DFCB CN18-6 (ON) • Location of electrical component: DF 4-C
6. M7 load check • Check code: 60 • Multi code: 65, 66, 67 • Control signal: DFCB CN14-6 to 9 • Location of electrical component: DF 7-C
7. Replace M7.
8. DFCB ICP4, ICP7, ICP15 conduction check
9. Replace DFCB.

Code: C6704
Description: Image input time out
Image data is not input from the scanner to the CPU board (CPUB).
Causes: • CCD unit
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Memory Bus Check] -> [Scanner -> Memory], and conduct the memory bus function.
2. Check the connector between CCDB CN2-BASEB CN6 for proper connection and correct as necessary.
3. Check CPUB for proper installation and correct as necessary.
4. Replace the CCD unit.
5. Replace CPUB.
6. Replace BASEB.

Code: C6751
Description: CCD clamp/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
• CCD unit
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between CCDB CN2-BASEB CN6 for proper connection and correct as necessary.
2. Check CPUB for proper installation and correct as necessary.
3. Check for possible extraneous light and correct as necessary.
4. Clean the lens, mirrors, CCD surface, and shading sheet if dirty.
5. Correct reflective mirror of the scanner if faulty, or change scanner mirror.
6. Replace the CCD unit.
7. Replace CPUB.
8. Replace BASEB.

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: • CCD unit
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between CCDB CN2-BASEB CN6 for proper connection and correct as necessary.
2. Check CPUB for proper installation and correct as necessary.
3. Replace the CCD unit.
4. Replace CPUB.
5. Replace BASEB.

Code: C6753
Description: ASIC clock input error (back side)
When starting the machine, verification on reading and writing the predetermined value for CPU (image processing section) on CPU board (CPUB) was conducted, and verification failure was detected.
Causes: • CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check CPUB for proper installation and correct as necessary.
2. Replace CPUB.
3. Replace BASEB.

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)
• CIS power supply (CISPU)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between CIS CN2-BASEB CN5 for proper connection and correct as necessary.
2. Check CPUB for proper installation and correct as necessary.
3. Correct the harness connection between CIS CN1-CISPU CN2 if faulty.
4. Check for possible extraneous light and correct as necessary.
5. Clean the back side reading glass and the shading sheet if dirty.
6. Replace CIS.
7. Replace CISPU.
8. Replace CPUB.
9. Replace BASEB.

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 or power key is turned ON or the machine recovers from the sleep mode.
Causes: • CCD unit
• Scanner drive board (SCDB)
• DC power supply (DCPU)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Correct the harness connection between CCDB CN1-SCDB CN5 if faulty.
2. Correct the harness connection between SCDB CN1-BASEB CN7E if faulty.
3. Correct the harness connection between BASEB CN1E, CN14E-DCPU CN5, CN6 if faulty.
4. Check CPUB for proper installation and correct as necessary.
5. Replace the CCD unit.
6. SCDB ICP1 conduction check
7. Replace SCDB.
8. Replace CPUB.
9. Replace BASEB.
10. Replace DCPU. (bizhub C650i/C550i / bizhub C450i)

Code: C6901, C6902, C6903
Description: • C6901: DSC board mount failure 1 (When SC-509 is installed)
• C6902: DSC board bus check NG1-1 (When SC-509 is installed)
• C6901: When MFP detects that DSC board/1 (front side) is not properly installed.
• C6903: DSC board bus check NG1-2 (When SC-509 is installed)
• C6902, C6903: When DSC bus check (front side) detects an error.
Causes: • DSC board/1 (DSCB/1; SC-509)
• CPU board (CPUB)
Troubleshooting Guides: 1. Check the connector between DSCB/1 CN1-CPUB CN9 for proper connection and correct as necessary.
2. Replace DSCB/1.
3. Replace CPUB.

Code: C6911, C6912, C6913
Description: • C6911: DSC board mount failure 2 (When SC-509 is installed)
• C6912: DSC board bus check NG2-1 (When SC-509 is installed)
• C6913: DSC board bus check NG2-2 (When SC-509 is installed)
• C6911: When MFP detects that DSC board/1 (back side) is not properly installed.
• C6912, C6913: When DSC bus check (back side) detects an error.
Causes: • DSC board/1 (DSCB/1; SC-509)
• CPU board (CPUB)
Troubleshooting Guides: 1. Check the connector between DSCB/1 CN1-CPUB CN9 for proper connection and correct as necessary.
2. Replace DSCB/1.
3. Replace CPUB.

Code: C6F01 … C6FDD
Description: • C6F01: Scanner sequence trouble 1
• C6F02: Scanner sequence trouble 2
• C6F03: Scanner sequence trouble 3
• C6F04: Scanner sequence trouble 4
• C6F05: Scanner sequence trouble 5
• C6F06: Scanner sequence trouble 6
• C6F07: Scanner sequence trouble 7
• C6F08: Scanner sequence trouble 8
• C6F09: Scanner sequence trouble 9
• C6F0A: Scanner sequence trouble 10
• C6FDC: Scanner sequence trouble DC
• C6FDD: Scanner sequence trouble DD
The original transport interval becomes shorter than the predetermined value due to an original transport control error in original reading in DF.
Causes: • CPU board (CPUB)
• Base board (BASEB)
• DF control board (DFCB)
Troubleshooting Guides: 1. Correct the harness connection between main body and DF if faulty.
2. Check CPUB for proper installation and correct as necessary.
3. Replace DFCB.
4. Replace CPUB.
5. Replace BASEB.

Code: C7106
Description: Paper exit/reverse motor failure
After starting the motor, an error is detected for the malfunction detection signal.
Causes: • Paper exit/reverse motor (M4)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between M4-relay CN820-BASEB CN18E for proper connection and correct as necessary.
2. Check the connector of M4 for proper drive coupling and correct as necessary.
3. M4 conduction check. • Control signal: BASEB CN18E-3 to 6 • Location of electrical component: 6-C
4. Replace M4.
5. Replace BASEB.

Code: C7107
Description: ADU transport motor/1 failure
After starting the motor, an error is detected for the malfunction detection signal.
Causes: • ADU transport motor/1 (M5)
• Base board (BASEB)
Troubleshooting Guides: Procedure 1. Check the connector between M5-relay CN86-BASEB CN18E for proper connection and correct as necessary.
2. Check the connector of M5 for proper drive coupling and correct as necessary.
3. M5 conduction check. • Control signal: BASEB CN18E-7 to 10 • Location of electrical component: 6-C
4. Replace M5.
5. Replace BASEB.

Code: C7111
Description: Tray 1 lift-up motor failure
After starting the motor, an error is detected for the malfunction detection signal.
Causes: • Tray 1 lift-up motor (M12)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between M12-relay CN180-BASEB CN25E for proper connection and correct as necessary.
2. Check the connector of M12 for proper drive coupling and correct as necessary.
3. M12 conduction check. • Control signal: BASEB CN25E-1 (REM) • Location of electrical component: 17-K
4. Replace M12.
5. Replace BASEB.

Code: C7112
Description: Tray 2 lift-up motor failure
After starting the motor, an error is detected for the malfunction detection signal.
Causes: • Tray 2 lift-up motor (M13)
• Base board (BASEB)
Troubleshooting Guides: Procedure
1. Check the connector between M13-relay CN181-BASEB CN25E for proper connection and correct as necessary.
2. Check the connector of M13 for proper drive coupling and correct as necessary.
3. M13 conduction check. • Control signal: BASEB CN25E-10 (REM) • Location of electrical component: 18-K
4. Replace M13.
5. Replace BASEB.

Code: C7131
Description: Toner supply motor/C failure
After starting the motor, an error is detected for the malfunction detection signal.
Causes: • Toner supply motor/C (M7)
• Expansion control board (EXCB)
Troubleshooting Guides: 1. Check the connector between M7-EXCB CN11EX for proper connection and correct as necessary.
2. Check the connector of M7 for proper drive coupling and correct as necessary.
3. M7 conduction check. • Control signal: EXCB CN11EX-17 to 20 • Location of electrical component: 16-P
4. Replace M7.
5. Replace EXCB.

Code: C7132
Description: Toner cartridge motor/CK failure
After starting the motor, an error is detected for the malfunction detection signal.
Causes: • Toner cartridge motor/CK (M25)
• Expansion control board (EXCB)
Troubleshooting Guides: 1. Check the connector between M25-relay CN128-EXCB CN11EX for proper connection and correct as necessary.
2. Check the connector of M25 for proper drive coupling and correct as necessary.
3. M25 conduction check. • Control signal: EXCB CN11EX-1 to 4 • Location of electrical component: 15-P
4. Replace M25.
5. Replace EXCB.

Code: C7133
Description: Toner supply motor/M failure
After starting the motor, an error is detected for the malfunction detection signal.
Causes: • Toner supply motor/M (M8)
• Expansion control board (EXCB)
Troubleshooting Guides: 1. Check the connector between M8-EXCB CN11EX for proper connection and correct as necessary.
2. Check the connector of M8 for proper drive coupling and correct as necessary.
3. M8 conduction check. • Control signal: EXCB CN11EX-13 to 16 • Location of electrical component: 16-P
4. Replace M8.
5. Replace EXCB.

Code: C7134
Description: Toner cartridge motor/YM failure
After starting the motor, an error is detected for the malfunction detection signal.
Causes: • Toner cartridge motor/YM (M10)
• Expansion control board (EXCB)
Troubleshooting Guides: 1. Check the connector between M10-relay CN125-EXCB CN11EX for proper connection and correct as necessary.
2. Check the connector of M10 for proper drive coupling and correct as necessary.
3. M10 conduction check. • Control signal: EXCB CN11EX-5 to 8 • Location of electrical component: 15-P
4. Replace M10.
5. Replace EXCB.

Code: C7135
Description: Toner supply motor/Y failure
After starting the motor, an error is detected for the malfunction detection signal.
Causes: • Toner supply motor/Y (M9)
• Expansion control board (EXCB)
Troubleshooting Guides: 1. Check the connector between M9-EXCB CN11EX for proper connection and correct as necessary.
2. Check the connector of M9 for proper drive coupling and correct as necessary.
3. M9 conduction check. • Control signal: EXCB CN11EX-9 to 12 • Location of electrical component: 16-P
4. Replace M9.
5. Replace EXCB.

Code: C7137
Description: Toner supply motor/K failure
After starting the motor, an error is detected for the malfunction detection signal.
Causes: • Toner supply motor/K (M6)
• Expansion control board (EXCB)
Troubleshooting Guides: 1. Check the connector between M6-relay CN126-EXCB CN10EX for proper connection and correct as necessary.
2. Check the connector of M6 for proper drive coupling and correct as necessary.
3. M6 conduction check. • Control signal: EXCB CN10EX-16 to 19 • Location of electrical component: 23-P
4. Replace M6.
5. Replace EXCB.

Code: C7139
Description: Waste toner transport motor failure
After starting the motor, an error is detected for the malfunction detection signal.
Causes: • Waste toner transport motor (M20)
• Expansion control board (EXCB)
Troubleshooting Guides: 1. Check the connector between M20-relay CN92-EXCB CN10EX for proper connection and correct as necessary.
2. Check the connector of M20 for proper drive coupling and correct as necessary.
3. M20 conduction check. • Control signal: EXCB CN10EX-12 to 15 • Location of electrical component: 22-P
4. Replace M20.
5. Replace EXCB.

Code: C7141
Description: Fusing pressure motor failure
After starting the motor, an error is detected for the malfunction detection signal.
Causes: • Fusing pressure motor (M11)
• Expansion control board (EXCB)
Troubleshooting Guides: 1. Check the connector between M11-relay CN112-EXCB CN14EX for proper connection and correct as necessary.
2. Check the connector of M11 for proper drive coupling and correct as necessary.
4. Replace M11.
5. Replace EXCB.

Code: C7151, C7152, C7153
Description: • C7151: Skew correction motor/C failure
• C7152: Skew correction motor/M failure
• C7153: Skew correction motor/Y failure
After starting the motor, an error is detected for the malfunction detection signal.
Causes: • PH unit
• Expansion control board (EXCB)
Troubleshooting Guides: 1. Check the connector between the PH unit-relay CN300-EXCB CN7EX for proper connection and correct as necessary.
2. PH unit conduction check • Control signal: EXCB CN7EX-1 to 6 (C7153), EXCB CN7EX-7 to 12 (C7152), EXCB CN7EX-13 to 18 (C7151) • Location of electrical component: 20 to 21-P
3. Replace the PH unit.
4. Replace EXCB.

Code: C7160
Description: Fusing shutter motor failure (bizhub C650i/C550i)
After starting the motor, an error is detected for the malfunction detection signal.
Causes: • Fusing shutter motor (M15)
• Expansion control board (EXCB)
Troubleshooting Guides: 1. Check the connector between M15-relay CN164-EXCB CN14EX for proper connection and correct as necessary.
2. Check the connector of M15 for proper drive coupling and correct as necessary.
3. M15 conduction check. • Control signal: EXCB CN14EX-15 to 18 • Location of electrical component: 18-P
4. Replace M15.
5. Replace EXCB.

Code: C7162
Description: Tray 2 vertical transport motor failure
After starting the motor, an error is detected for the malfunction detection signal.
Causes: • Tray 2 vertical transport motor (M23)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between M23-BASEB CN31E for proper connection and correct as necessary.
2. Check the connector of M23 for proper drive coupling and correct as necessary.
3. M23 conduction check. • Control signal: BASEB CN31E-5 to 8 • Location of electrical component: 23-K
4. Replace M23.
5. Replace BASEB.

Code: C7163
Description: Registration motor failure (bizhub C650i)
After starting the motor, an error is detected for the malfunction detection signal.
Causes: • Registration motor (M24)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between M24-BASEB CN31E for proper connection and correct as necessary.
2. Check the connector of M24 for proper drive coupling and correct as necessary.
3. M24 conduction check. • Control signal: BASEB CN31E-9 to 12 • Location of electrical component: 24-K
4. Replace M24.
5. Replace BASEB.

Code: C7164
Description: ADU transport motor/2 failure
After starting the motor, an error is detected for the malfunction detection signal.
Causes: • ADU transport motor/2 (M26)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between M26-relay CN12-BASEB CN18E for proper connection and correct as necessary.
2. Check the connector of M26 for proper drive coupling and correct as necessary.
3. M26 conduction check. • Control signal: BASEB CN18E-11 to 14 • Location of electrical component: 6-C
4. Replace M26.
5. Replace BASEB.

Code: C7202
Description: Tray 2 paper feed clutch failure
After starting the clutch, an error is detected for the malfunction detection signal.
Causes: • Tray 2 paper feed clutch (CL1)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between CL1-relay CN43-relay CN40-BASEB CN23E for proper connection and correct as necessary.
2. Check the connector of CL1 for proper drive coupling and correct as necessary.
3. CL1 conduction check. • Control signal: BASEB CN23E-16 (ON) • Location of electrical component: 16-K
4. Replace CL1.
5. Replace BASEB.

Code: C7206
Description: Bypass tray paper feed clutch failure
After starting the clutch, an error is detected for the malfunction detection signal.
Causes: • Bypass tray paper feed clutch (CL7)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between CL7-relay CN20-relay CN13-BASEB CN26E for proper connection and correct as necessary.
2. Check the connector of CL7 for proper drive coupling and correct as necessary.
3. CL7 conduction check. • Control signal: BASEB CN26EA-12 (ON) • Location of electrical component: 10-K
4. Replace CL7.
5. Replace BASEB.

Code: C720A
Description: Registration clutch failure (bizhub C550i/C450i)
After starting the clutch, an error is detected for the malfunction detection signal.
Causes: • Registration clutch (CL4)
• Base board (BASEB)
Troubleshooting Guides: Procedure
1. Check the connector between CL4-relay CN73-relay CN170-BASEB CN15E for proper connection and correct as necessary.
2. Check the connector of CL4 for proper drive coupling and correct as necessary.
3. CL4 conduction check. • Control signal: BASEB CN15E-2 (ON) • Location of electrical component: 3-C
4. Replace CL4.
5. Replace BASEB.

Code: C720B
Description: 1st transfer pressure clutch failure
After starting the clutch, an error is detected for the malfunction detection signal.
Causes: • 1st transfer pressure clutch (CL5)
• Expansion control board (EXCB)
Troubleshooting Guides: 1. Check the connector between CL5-relay CN118-EXCB CN14EX for proper connection and correct as necessary.
2. Check the connector of CL5 for proper drive coupling and correct as necessary.
3. CL5 conduction check. • Control signal: EXCB CN14EX-9 (REM) • Location of electrical component: 17 to 18-P
4. Replace CL5.
5. Replace EXCB.

Code: C7241
Description: Bypass tray lift-up solenoid failure
After starting the solenoid, an error is detected for the malfunction detection signal.
Causes: • Bypass tray lift-up solenoid (SD1)
• Base board (BASEB)
Troubleshooting Guides: Procedure
1. Check the connector between SD1-relay CN21-relay CN13-BASEB CN26E for proper connection and correct as necessary.
2. Check the connector of SD1 for proper drive coupling and correct as necessary.
3. SD1 conduction check. • Control signal: BASEB CN26EA-9 (ON) • Location of electrical component: 10-K
4. Replace SD1.
5. Replace BASEB.

Code: C7242
Description: Bypass tray pick-up roller solenoid failure
After starting the solenoid, an error is detected for the malfunction detection signal.
Causes: • Bypass tray pick-up roller solenoid (SD6)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between SD6-relay CN191-relay CN13-BASEB CN26E for proper connection and correct as necessary.
2. Check the connector of SD6 for proper drive coupling and correct as necessary.
3. SD6 conduction check. • Control signal: BASEB CN26EA-7 (ON) • Location of electrical component: 10-K
4. Replace SD6.
5. Replace BASEB.

Code: C7243
Description: Exit path switch solenoid failure
After starting the solenoid, an error is detected for the malfunction detection signal.
Causes: • Exit path switch solenoid (SD3)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between SD3-relay CN208-relay CN108-BASEB CN13E for proper connection and correct as necessary.
2. Check the connector of SD3 for proper drive coupling and correct as necessary.
3. SD3 conduction check. • Control signal: BASEB CN13E-7 (ON) • Location of electrical component: 14-C
4. Replace SD3.
5. Replace BASEB.

Code: C7251
Description: Developing solenoid failure
After starting the solenoid, an error is detected for the malfunction detection signal.
Causes: • Developing solenoid (SD4)
• Expansion control board (EXCB)
Troubleshooting Guides: 1. Check the connector between SD4-relay CN159-EXCB CN14EX for proper connection and correct as necessary.
2. Check the connector of SD4 for proper drive coupling and correct as necessary.
3. SD4 conduction check.
• Control signal: EXCB CN14EX-7 (REM)
• Location of electrical component: 17-P
4. Replace SD4.
5. Replace EXCB.

Code: C7301
Description: PH/power supply cooling fan failure
After starting the fan, an error is detected for the malfunction detection signal.
Causes: • PH/power supply cooling fan (FM1)
• Expansion control board (EXCB)
Troubleshooting Guides: 1. Check the connector between FM1-relay CN26-EXCB CN10EX for proper connection and correct as necessary.
2. Check the connector of FM1 for proper drive coupling and correct as necessary.
3. FM1 conduction check. • Control signal: EXCB CN10EX-6 (REM), EXCB CN10EX-8 (LOCK) • Location of electrical component: 22-P
4. Replace FM1.
5. Replace EXCB.

Code: C7302
Description: Transfer belt cleaner cooling fan failure
After starting the fan, an error is detected for the malfunction detection signal.
Causes: • Transfer belt cleaner cooling fan (FM2)
• Expansion control board (EXCB)
Troubleshooting Guides: 1. Check the connector between FM2-relay CN115-EXCB CN10EX for proper connection and correct as necessary.
2. Check the connector of FM2 for proper drive coupling and correct as necessary.
3. FM2 conduction check. • Control signal: EXCB CN10EX-9 (REM), EXCB CN10EX-11 (LOCK) • Location of electrical component: 22-P
4. Replace FM2.
5. Replace EXCB.

Code: C7304
Description: Toner cartridge cooling fan failure
After starting the fan, an error is detected for the malfunction detection signal.
Causes: • Toner cartridge cooling fan (FM4)
• Expansion control board (EXCB)
Troubleshooting Guides: 1. Check the connector between FM4-relay CN78-EXCB CN14EX for proper connection and correct as necessary.
2. Check the connector of FM4 for proper drive coupling and correct as necessary.
3. FM4 conduction check. • Control signal: EXCB CN14EX-4 (REM), EXCB CN14EX-6 (LOCK) • Location of electrical component: 17-P
4. Replace FM4.
5. Replace EXCB.

Code: C7305
Description: Paper cooling fan failure
After starting the fan, an error is detected for the malfunction detection signal.
Causes: • Paper cooling fan (FM8)
• Expansion control board (EXCB)
Troubleshooting Guides: 1. Check the connector between FM8-relay CN27-relay CN28-EXCB CN14EX for proper connection and correct as necessary.
2. Check the connector of FM8 for proper drive coupling and correct as necessary.
3. FM8 conduction check. • Control signal: EXCB CN14EX-1 (REM), EXCB CN14EX-3 (LOCK) • Location of electrical component: 17-P
4. Replace FM8.
5. Replace EXCB.

Code: C7310
Description: DV cooling fan failure
After starting the fan, an error is detected for the malfunction detection signal.
Causes: • DV cooling fan (FM19)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between FM19-relay CN804-BASEB CN37E for proper connection and correct as necessary.
2. Check the connector of FM19 for proper drive coupling and correct as necessary.
3. FM19 conduction check. • Control signal: BASEB CN37E-1 (REM), BASEB CN37E-3 (LOCK) • Location of electrical component: 24-K
4. Replace FM19.
5. Replace BASEB.

Code: C7311
Description: Fusing edge cooling fan/Rr failure (bizhub C650i/C550i)
After starting the fan, an error is detected for the malfunction detection signal.
Causes: • Fusing edge cooling fan/Rr (FM22)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between FM22-relay CN163-relay CN161-BASEB CN22E for proper connection and correct as necessary.
2. Check the connector of FM22 for proper drive coupling and correct as necessary.
3. FM22 conduction check.
• Control signal: BASEB CN22E-16 (REM), BASEB CN22E-18 (LOCK) • Location of electrical component: 13-C
4. Replace FM22.
5. Replace BASEB.

Code: C7312
Description: Toner suction fan failure
After starting the fan, an error is detected for the malfunction detection signal.
Causes: • Toner suction fan (FM11)
• Expansion control board (EXCB)
Troubleshooting Guides: 1. Check the connector between FM11-relay CN62-relay CN63-EXCB CN15EX for proper connection and correct as necessary.
2. Check the connector of FM11 for proper drive coupling and correct as necessary.
3. FM11 conduction check. • Control signal: EXCB CN15EX-1 (REM), EXCB CN15EX-3 (LOCK) • Location of electrical component: 25-X
4. Replace FM11.
5. Replace EXCB.

Code: C7313
Description: UFP scavenging fan/Fr failure
After starting the fan, an error is detected for the malfunction detection signal.
Causes: • UFP scavenging fan/Fr (FM17)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between FM17-relay CN801-relay CN5-BASEB CN22E for proper connection and correct as necessary.
2. Check the connector of FM17 for proper drive coupling and correct as necessary.
3. FM17 conduction check. • Control signal: BASEB CN22E-7 (REM), BASEB CN22E-9 (LOCK) • Location of electrical component: 12-C
4. Replace FM17.
5. Replace BASEB.

Code: C7314
Description: UFP scavenging fan/Rr failure (bizhub C650i/C550i)
After starting the fan, an error is detected for the malfunction detection signal.
Causes: • UFP scavenging fan/Rr (FM18)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between FM18-relay CN802-relay CN5-BASEB CN22E for proper connection and correct as necessary.
2. Check the connector of FM18 for proper drive coupling and correct as necessary.
3. FM18 conduction check. • Control signal: BASEB CN22E-10 (REM), BASEB CN22E-12 (LOCK) • Location of electrical component: 12-C
4. Replace FM18.
5. Replace BASEB.

Code: C7315
Description: Fusing edge cooling fan/Fr failure (bizhub C650i/C550i)
After starting the fan, an error is detected for the malfunction detection signal.
Causes: • Fusing edge cooling fan/Fr (FM21)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between FM21-relay CN162-relay CN161-BASEB CN22E for proper connection and correct as necessary.
2. Check the connector of FM21 for proper drive coupling and correct as necessary.
3. FM21 conduction check. • Control signal: BASEB CN22E-13 (REM), BASEB CN22E-15 (LOCK) • Location of electrical component: 12-C
4. Replace FM21.
5. Replace BASEB.

Code: C7317
Description: Paper exit cooling fan failure
After starting the fan, an error is detected for the malfunction detection signal.
Causes: • Paper exit cooling fan (FM23)
• Expansion control board (EXCB)
Troubleshooting Guides: 1. Check the connector between FM23-relay CN710-EXCB CN15EX for proper connection and correct as necessary.
2. Check the connector of FM23 for proper drive coupling and correct as necessary.
3. FM23 conduction check. • Control signal: EXCB CN15EX-4 (REM), EXCB CN15EX-6 (LOCK) • Location of electrical component: 26-X
4. Replace FM23.
5. Replace EXCB.

Code: C7501
Description: Tray 2 upper limit sensor failure
The tray 2 upper limit sensor (PS22) does not change even after the lapse of a predetermined period of time after tray 2 is opened and closed, after C-0204 (Tray 2 feeder up/down abnormality) is detected.
Causes: • Tray 2 upper limit sensor (PS22)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between PS22-relay CN40-BASEB CN23E for proper connection and correct as necessary.
2. Replace PS22.
3. Replace BASEB.

Code: C7502
Description: Tray 1 upper limit sensor failure
The tray 1 upper limit sensor (PS25) does not change even after the lapse of a predetermined period of time after tray 1 is opened and closed, after C-0202 (Tray 1 feeder up/down abnormality) is detected.
Causes: • Tray 1 upper limit sensor (PS25)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between PS25-relay CN30-BASEB CN26E for proper connection and correct as necessary.
2. Replace PS25.
3. Replace BASEB.

Code: C7601
Description: Power line A1 error
The fuse detection unit detected an error for a predetermined time.
Causes: • Transport motor (M1)
• Base board (BASEB)
Troubleshooting Guides: 1. BASEB F1E conduction check
2. Check the connector between M1-BASEB CN19E for proper connection and correct as necessary.
3. M1 load check
• Check code: 40 • Multi code: 1, 2, 3, 4 (bizhub C650i), 1, 3, 4 (bizhub C550i), 1, 2, 4 (bizhub C450i) • Control signal: BASEB CN19EA-1 to 5 • Location of electrical component: 1-C
4. Replace M1.
5. Replace BASEB.

Code: C7602
Description: Power line A2 error
The fuse detection unit detected an error for a predetermined time.
Causes: • PC motor (M2)
• Base board (BASEB)
Troubleshooting Guides: 1. BASEB F2E conduction check
2. Check the connector between M2-BASEB CN19E for proper connection and correct as necessary.
3. M2 load check • Check code: 41 • Multi code: 1, 2, 3, 4 (bizhub C650i), 1, 3, 4 (bizhub C550i), 1, 2, 4 (bizhub C450i) • Control signal: BASEB CN19EB-1 to 5 • Location of electrical component: 1 to 2-C
4. Replace M2.
5. Replace BASEB.

Code: C7603
Description: Power line A3 error
The fuse detection unit detected an error for a predetermined time.
Causes: • Developing motor (M27)
• Base board (BASEB)
Troubleshooting Guides: 1. BASEB F3E conduction check
2. Check the connector between M27-BASEB CN19E for proper connection and correct as necessary.
3. M27 load check • Check code: 50 • Multi code: 1, 2, 3, 4 (bizhub C650i), 1, 3, 4 (bizhub C550i), 1, 2, 4 (bizhub C450i) • Control signal: BASEB CN19EB-6 to 10 • Location of electrical component: 2-C
4. Replace M27.
5. Replace BASEB.

Code: C7604
Description: Power line A4 error
The fuse detection unit detected an error for a predetermined time.
Causes: • Fusing motor (M3)
• Base board (BASEB)
Troubleshooting Guides: 1. BASEB F4E conduction check
2. Check the connector between M3-BASEB CN19E for proper connection and correct as necessary.
3. M3 load check • Check code: 45 • Multi code: 1, 2, 3, 4, 6 (bizhub C650i), 1, 3, 4, 6 (bizhub C550i), 1, 2, 4, 6 (bizhub C450i) • Control signal: BASEB CN19EA-6 to 10 • Location of electrical component: 1-C
4. Replace M3.
5. Replace BASEB.

Code: C7605
Description: Power line A5 error
The fuse detection unit detected an error for a predetermined time.
Causes: • High voltage unit (HV)
• Base board (BASEB)
Troubleshooting Guides: 1. BASEB F5E conduction check
2. Check the connector between HV CN1-BASEB CN26E, HV CN2-BASEB CN21E for proper connection and correct as necessary.
3. Replace HV.
4. Replace BASEB.

Code: C7606
Description: Power line A6 error
The fuse detection unit detected an error for a predetermined time.
Causes: • Base board (BASEB)
Troubleshooting Guides: 1. BASEB F6E conduction check.
2. Replace BASEB.

Code: C7607
Description: Power line A7 error
The fuse detection unit detected an error for a predetermined time.
Causes: • Registration clutch (CL4) (bizhub C550i/C450i)
• Bypass tray paper feed clutch (CL7)
• Base board (BASEB)
Troubleshooting Guides: 1. BASEB F7E conduction check
2. Check the connector between CL4-relay CN73-relay CN170-BASEB CN15E for proper connection and correct as necessary.
3. Check the connector between CL7-relay CN20-relay CN13-BASEB CN26E for proper connection and correct as necessary.
4. CL4 conduction check. • Control signal: BASEB CN15E-2 (ON) • Location of electrical component: 3-C
5. CL7 conduction check. • Control signal: BASEB CN26EA-12 (ON) • Location of electrical component: 10-K
6. Replace CL4.
7. Replace CL7.
8. Replace BASEB.

Code: C760A
Description: Power line A10 error
The fuse detection unit detected an error for a predetermined time.
Causes: • PC control board (PCCB)
• Base board (BASEB)
Troubleshooting Guides: 1. BASEB F11E conduction check
2. Check the connector between PCCB CN2-relay CN65-BASEB CN29E for proper connection and correct as necessary.
3. Replace PCCB. (PC-116/PC-216 / PC-416 / PC-417)
4. Replace BASEB.

Code: C760B
Description: Power line A11 error
The fuse detection unit detected an error for a predetermined time.
Causes: • Expansion control board (EXCB)
• Base board (BASEB)
Troubleshooting Guides: 1. BASEB F12E conduction check
2. Check the connector between EXCB CN1EX-BASEB CN11E for proper connection and correct as necessary.
3. Replace EXCB.
4. Replace BASEB.

Code: C760C
Description: Power line A12 error
The fuse detection unit detected an error for a predetermined time.
Causes: • Total counter (TCT) (Japan models only)
• Key counter (KCT)
• Base board (BASEB)
Troubleshooting Guides: 1. BASEB F13E conduction check
2. Check the connector between TCT-relay CN117-BASEB CN13E for proper connection and correct as necessary. (Japan models only)
3. Check the connector between KCT-relay CN119-BASEB CN3E for proper connection and correct as necessary.
4. Replace the key counter.
5. Replace BASEB.

Code: C760D
Description: Power line A13 error
The fuse detection unit detected an error for a predetermined time.
Causes: • DF control board (DFCB)
• Scanner drive board (SCDB)
• Base board (BASEB)
Troubleshooting Guides: 1. BASEB F14E conduction check
2. BASEB F15E conduction check
3. Check the connector between SCDB CN1-BASEB CN7E for proper connection and correct as necessary.
4. Check the connector between DFCB CN12-relay CN2DF-BASEB CN9E for proper connection and correct as necessary.
5. Replace SCDB.
6. Replace DFCB.
7. Replace BASEB.

Code: C760E
Description: Power line A14 error
The fuse detection unit detected an error for a predetermined time.
Causes: • Front door switch (SW2)
• Right door switch (SW3)
• Base board (BASEB)
Troubleshooting Guides: 1. BASEB F15E conduction check
2. Check the connector between SW2-BASEB CN3E for proper connection and correct as necessary.
3. Check the connector between SW3-BASEB CN3E, CN4E for proper connection and correct as necessary.
4. Replace SW2 or SW3.
5. Replace BASEB.

Code: C760F
Description: Power line A15 error
The fuse detection unit detected an error for a predetermined time.
Causes: • Clean unit drive board (CUDB)
• Base board (BASEB)
Troubleshooting Guides: 1. BASEB F17E conduction check
2. Check the connector between CUDB CN1-relay CN28D-BASEB CN28E for proper connection and correct as necessary.
3. Replace CUDB.
4. Replace BASEB.

Code: C7610
Description: Power line A16 error
The fuse detection unit detected an error for a predetermined time.
Causes: • Envelope detection board/RX (ENVDB/RX)
• Base board (BASEB)
Troubleshooting Guides: 1. BASEB F19E conduction check
2. Check the connector between ENVDB/RX CN1MD-relay CN255-relay CN256-BASEB CN36E for proper connection and correct as necessary.
3. Replace ENVDB/RX.
4. Replace BASEB.

Code: C7622, C7623
Description: • C7622: Power line B2 error
• C7623: Power line B3 error
The fuse detection unit detected an error for a predetermined time.
Causes: • PH unit
• Expansion control board (EXCB)
Troubleshooting Guides: 1. EXCB ICP1 or ICP3 conduction check.
2. Check the connector between the PH unit-relay CN306-EXCB CN10EX for proper connection and correct as necessary.
3. Check the connector between the PH unit-relay CN300-EXCB CN7EX for proper connection and correct as necessary.
4. Replace the PH unit.
5. Replace EXCB.

Code: C7624
Description: Power line B4 error
The fuse detection unit detected an error for a predetermined time.
Causes: • Envelope detection relay board (ENVDRB)
• Expansion control board (EXCB)
Troubleshooting Guides: 1. EXCB ICP5 conduction check
2. Check the connector between ENVDRB CN2-relay CN253-relay CN254-EXCB CN6EX for proper connection and correct as necessary.
3. Replace ENVDRB.
4. Replace EXCB.

Code: C7631
Description: Supply power line 1 error
All of the fuse detection units of the same supply power line (24V11) detected an error for a predetermined time.
Causes: • DC power supply (DCPU)
• Expansion control board (EXCB)
• Base board (BASEB)
Troubleshooting Guides: 1. BASEB F11E, F12E, F13E, F14E, F15E, F17E conduction check
2. Check the connector between DCPU CN6-BASEB CN14E for proper connection and correct as necessary.
3. Check the connector between BASEB CN11E-EXCB CN1EX for proper connection and correct as necessary.
4. Replace BASEB.
5. Replace EXCB.
6. Replace DCPU. (bizhub C650i/C550i / bizhub C450i)

Code: C7633
Description: Supply power line 3 error
All of the fuse detection units of the same supply power line (24V21) detected an error for a predetermined time.
Causes: • DC power supply (DCPU)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between DCPU CN6-BASEB CN20E for proper connection and correct as necessary.
2. Replace BASEB.
3. Replace DCPU. (bizhub C650i/C550i / bizhub C450i)

Code: C8103
Description: Lift up mechanism trouble (Upward movement)
The DF lift-up upper limit sensor (PS2) is not turned ON (blocked) after a lapse of a given time after the DF lift-up motor (M5) moves up (is turned forward).
Causes: • DF lift-up motor (M5)
• DF lift-up upper limit 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 CN5A for proper connection and correct as necessary.
4. PS2 I/O check, sensor check • Control signal: DFCB CN5A-6 (ON) • Location of electrical component: DF 8-J
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 DF lift-up lower limit sensor (PS3) is not turned ON (blocked) after a lapse of a given time after the DF lift-up motor (M5) goes down (is turned backward).
Causes: • DF lift-up motor (M5)
• DF lift-up lower limit 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 document reading glass cleaning sensor (PS18) is not turned ON (blocked) after the set period of time has elapsed after the document reading glass cleaning motor (M8) is energized.
Causes: • Document reading glass cleaning motor (M8)
• Document reading glass cleaning 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 of M8 for proper drive coupling and correct as necessary.
3. Check the connector between PS18-DFCB CN18 for proper connection 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. Replace DFCB.

Code: C8302
Description: DF cooling fan failure
The fan lock signal remains Low for a predetermined continuous period of time while the fan is turning.
Causes: • DF cooling fan (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 CN19-1 (REM), DFCB CN19-3 (LOCK) • Location of electrical component: DF 4-C
4. Replace FM.
5. Replace DFCB.

Code: C8402
Description: Multi feed detection board failure
When the main power switch ON or when the original is being conveyed, the AD value there is no paper loaded state is out of the predetermined range.
Causes: • Multi feed detection board/TX (MFDB/TX)
• Multi feed detection board/RX (MFDB/RX)
• DF control board (DFCB)
Troubleshooting Guides: 1. Check the connector between MFDB/TX-relay CN114-DFCB CN23 for proper connection and correct as necessary.
2. Check the connector between MFDB/RX-DFCB CN22 for proper connection and correct as necessary.
3. MFDB/TX operation check • Control signal: DFCB CN23-1 to 3 • Location of electrical component: DF 11-J
4. MFDB/RX operation check • Control signal: DFCB CN22-1 to 4 • Location of electrical component: DF 10-J
5. Replace DFCB.

Code: C9401, C9402
Description: • C9401: Exposure LED lighting failure
• C9402: Exposure LED lighting abnormally
• C9401: The output from the CCD sensor is a predetermined value or less during CCD sensor gain adjustment.
• 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 unit
• Scanner drive board (SCDB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Correct the harness connection between SCDB CN3-LU201 if faulty.
2. Check the connector between SCDB CN2-BASEB CN6E for proper connection and correct as necessary.
3. Check the connector between CCDB CN2-BASEB CN6 for proper connection and correct as necessary.
4. Check CPUB for proper installation and correct as necessary.
5. Replace the LED exposure unit.
6. Replace the CCD unit.
7. SCDB ICP2 conduction check
8. Replace SCDB.
9. Replace CPUB.
10. Replace BASEB.

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 cable
• CIS module (CIS)
• CIS power supply (CISPU)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the back side scanning shading shaft for any stain, and clean up it as necessary.
2. Check that the bushing of the back side glass cleaning roller unit is on the standby position.
3. Correct the harness connection between CIS CN2-BASEB CN5 if faulty.
4. Correct the harness connection between CIS CN1-CISPU CN2 if faulty.
5. Check CPUB for proper installation and correct as necessary.
6. Measure the voltage of CISPU CN1-2. • Control signal: CISPU CN1-2 (DC12V) • Location of electrical component: DF 4-I
7. Measure the voltage of CIS CN1-1, CN1-2 and CN1-5. • Control signal: CIS CN1-1 (DC5V), CIS CN1-2 (DC5V), CIS CN1-5 (DC12V) • Location of electrical component: DF 5-I
8. For any abnormality in the measurement result, replace the CIS cable.
9. Replace CIS.
10. Replace CISPU.
11. Replace CPUB.
12. Replace BASEB.

Code: C9701
Description: Front side reading device cable break detection
The cable between the CCD board (CCDB) and the base board (BASEB) is break.
Causes: • CCD unit
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Correct the cable connection between CCDB CN2-BASEB CN6 if faulty.
2. Check CPUB for proper installation and correct as necessary.
3. Replace the CCD unit.
4. Replace CPUB.
5. Replace BASEB.

Code: C9702
Description: Back side reading device cable break detection
The cable between the CIS module (CIS) and the base board (BASEB) is break.
Causes: • CIS cable
• CIS module (CIS)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Correct the cable connection between CIS CN2- BASEB CN5 if faulty.
2. Check CPUB for proper installation and correct as necessary.
3. Replace the CIS cable.
4. Replace CIS.
5. Replace CPUB.
6. BASEB F19E conduction check
7. Replace BASEB.

Code: CA051, CA052, CA053
Description: • CA051: Standard controller configuration failure
• CA052: Controller hardware error
• CA053: Controller start failure
• CA051: The controller of the CPU board (CPUB) 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: • CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check to see if the following setting has been correctly made: [Service Mode] -> [System 2] -> [Image Controller Setting]. If changing the setting, turn OFF the main power switch and turn it ON again after 10 seconds or more.
2. Check the connectors on BASEB for proper connection and correct as necessary.
3. Replace CPUB.
4. Replace BASEB.

Code: CC002
Description: Vendor internal error
Error occurs inside the vendor.
Causes: • Vendor
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Turn OFF the main power switch and unplug the power cord. Connect the power cord after 15 sec. or more, 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-BASEB CN33E for proper connection and correct as necessary.
3. Check CPUB for proper installation and correct as necessary.
4. Replace CPUB.
5. Replace BASEB.
6. Replace the vendor.

Code: CC151, CC152
Description: • CC151: ROM contents error upon startup (MSC)
• CC152: ROM contents error upon startup (IR)
A fault is detected in a sequence of ROM contents check of the CPUB during starting.
Causes: • CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the ROM version.
2. Rewrite the firmware.
3. Check CPUB for proper installation and correct as necessary.
4. Replace CPUB.
5. Replace BASEB.

Code: CC155
Description: Finisher ROM error (When FS-533, FS-539, FS-539SD, FS-540, or FS-540SD is installed)
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 and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.
2. Rewrite the firmware.
3. Replace FSCB. (FS-533 / FS-539/FS-539SD / FS-540/FS-540SD)

Code: CC155
Description: Finisher ROM error (When JS-508 is installed)
Data of flash ROM of the finishing options is determined to be faulty when the main power switch is turned ON.
Causes: JS control board (JSCB)
Troubleshooting Guides: 1. Turn OFF the main power switch and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.
2. Rewrite the firmware.
3. Replace JSCB.

Code: CC156
Description: DF ROM error
Upgrade of the firmware has not been successful.
Causes: DF control board (DFCB)
Troubleshooting Guides: 1. Turn OFF the main power switch and unplug the power cord. Connect the power cord after 15 sec. or more, 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-509)
Troubleshooting Guides: Procedure
1. Correct the harness connection of DSCB/1 if faulty.
2. Turn OFF the main power switch and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.
3. Rewrite the firmware.
4. Replace DSCB/1.

Code: CC15B
Description: Flash ROM error (saddle) (When FS-539SD or FS-540SD 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 and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.
2. Rewrite the firmware.
3. Replace SDCB. (FS-539SD / FS-540SD)

Code: CC15C
Description: Engine Flash ROM writing error
Data of flash ROM of the engine is determined to be faulty.
Causes: • CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: Procedure
1. Turn OFF the main power switch and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.
2. Check CPUB for proper installation and correct as necessary.
3. Rewrite the firmware.
4. Replace CPUB.
5. Replace BASEB.

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: • Backup board (ERB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Rewrite the firmware.
2. Replace CPUB. NOTE . When taking the above steps, check whether CPUB is defective or not without replacing the ERB. 1. Turn OFF the main power switch and replace the current CPUB with a new one. 2. Update the firmware. 3. After completing the firmware update, turn OFF and ON the main power switch and check to see that warm-up is started. 4. When the trouble cannot be solved, reinstall the removed CPUB to the original board.
3. Replace BASEB.
4. 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 CPU 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: • Storage board (STRGB)
• CPU board (CPUB)
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 CPUB.
5. Replace STRGB.
6. If the above actions do not solve the problem, contact KM.

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 CPU board due to an insufficient memory space available, a ROM fault, or other reason when the main power switch is turned ON.
Causes: • CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. If the trouble code “C-C172” has occurred, access [Service Mode] -> [System 2] -> [Image Controller Setting] and check to see if “Others” is set for image controller. If any of these is set, according to the kind of controller, select “Controller 0” or “Controller 1.”
2. If the trouble code ‘C-C180’ 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. Check CPUB for proper installation and correct as necessary.
4. Replace CPUB.
5. Replace BASEB.
6. 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: • Storage board (STRGB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check STRGB for proper installation and correct as necessary.
2. Check CPUB for proper installation and correct as necessary.
3. Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Format] and perform the function.
4. Replace STRGB.
5. Replace CPUB.
6. Replace BASEB.

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: • CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Turn OFF the main power switch, wait for 10 sec., then turn the switch ON.
2. Check CPUB for proper installation and correct as necessary.
3. Reinstall the loadable device driver.
4. Rewrite the firmware.
5. Replace CPUB.
6. Replace BASEB.

Code: CC211
Description: Authentication device general error
When using the authentication device, authentication data is not to meet the specifications.
Causes: • CPU board (CPUB)
• Base board (BASEB)
• Authentication unit
Troubleshooting Guides: 1. Check the USB cable for proper connection. Reconnect the USB cable as necessary.
2. Check CPUB for proper installation and correct as necessary.
3. 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: • CPU board (CPUB)
• Base board (BASEB)
• 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. Check CPUB for proper installation and correct as necessary.
4. Turn OFF the main power switch, wait for 10 sec. or more, and turn ON the main power switch.
5. Re-register the user authentication information.
6. 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: • CPU board (CPUB)
• Base board (BASEB)
• Authentication unit
Troubleshooting Guides: 1. Check the USB cable for proper connection. Reconnect the USB cable as necessary.
2. Check CPUB for proper installation and correct as necessary.
3. Turn OFF the main power switch, wait for 10 sec. or more, and turn ON the main power switch.
4. Reset the authentication settings. (card type, IC card advanced settings, and etc.)
5. Re-register the user authentication information.

Code: CC214
Description: User information deletion error
The deletion of the user information is uncompleted.
Causes: • CPU board (CPUB)
• Base board (BASEB)
• Authentication unit
Troubleshooting Guides: 1. Check the USB cable for proper connection. Reconnect the USB cable as necessary.
2. Check CPUB for proper installation and correct as necessary.
3. 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: • CPU board (CPUB)
• Base board (BASEB)
• Authentication unit
Troubleshooting Guides: 1. Check the USB cable for proper connection. Reconnect the USB cable as necessary.
2. Check CPUB for proper installation and correct as necessary.
3. Turn OFF the main power switch, wait for 10 sec. or more, and turn ON the main power switch.
4. 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: • CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check CPUB for proper installation and correct as necessary.
2. Reinstall the authentication customize data.
3. Rewrite the firmware.
4. Replace CPUB.
5. Replace BASEB.

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

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: • Storage board (STRGB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Replace STRGB.
2. Replace CPUB.
3. Replace BASEB.

Code: CD002
Description: JOB RAM save errorThe error in save of job data to the memory / storage and its read error are detected.
Causes: • Storage board (STRGB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check STRGB for proper installation and correct as necessary.
2. Check CPUB for proper installation and correct as necessary.
3. Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Format] -> [Logical Format] and perform the function.
4. Replace STRGB.
5. Replace CPUB.
6. Replace BASEB.

Code: CD004, CD00F, CD020
Description: • CD004: Storage access error (connection failure)
• CD00F: Storage data transfer error
• CD020: Storage verify error
• CD004: Unable to communicate between the storage and CPU board (CPUB).
• CD00F: Data transfer from the storage is faulty.
• CD020: The data abnormality is detected by the storage verify check.
Causes: • Storage board (STRGB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check STRGB for proper installation and correct as necessary.
2. Check CPUB for proper installation and correct as necessary.
3. Replace STRGB.
4. Replace CPUB.
5. Replace BASEB.

Code: CD010
Description: Storage unformat
Unformatted storage is connected.
Causes: • Storage board (STRGB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check STRGB for proper installation and correct as necessary.
2. Check CPUB for proper installation and correct as necessary.
3. Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Format] and perform the function.
4. Replace STRGB.
5. Replace CPUB.
6. Replace BASEB.

Code: CD011
Description: Storage out of specifications mounted
A storage that falls outside the specifications is connected.
Causes: Storage board (STRGB)
Troubleshooting Guides: 1. Check the storage specifications.
2. Replace STRGB.

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

Code: CD030
Description: Storage management information reading error
The machine fails to read administrative information data saved in the storage.
Causes: Storage board (STRGB)
Troubleshooting Guides: 1. Check STRGB for proper installation and correct as necessary.
2. Check CPUB for proper installation 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 STRGB.

Code: CD041 … CD046
Description: Storage command execution error
The error occurred inside the storage.
Causes: Storage board (STRGB)
Troubleshooting Guides: 1. Check the storage specifications.
2. Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Format] and perform the function.
3. Replace STRGB.

Code: CD047 … CD04B
Description: Storage SCSI library error
The error occurred inside the storage.
Causes: Storage board (STRGB)
Troubleshooting Guides: 1. Check the storage specifications.
2. Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Format] and perform the function.
3. Replace STRGB.

Code: CD050
Description: Storage recovery timeout
The storage fails to recover from the power save mode within the predetermined period of time.
Causes: • Storage board (STRGB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check STRGB for proper installation and correct as necessary.
2. Check CPUB for proper installation and correct as necessary.
3. Reinstall STRGB.
4. Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Format] and perform the function.
5. Replace STRGB.

Code: CD072
Description: Second-hand SSD or second-hand CPU board installed.
The storage board (STRGB) or CPU board (CPUB) used on other MFPs is installed.
Causes: • Storage board (STRGB)
• CPU board (CPUB)
Troubleshooting Guides: 1. Replace the board with the new STRGB and CPUB.
Or, reuse the original STRGB and CPUB.

Code: CD073
Description: Storage type is different
When the installed storage and the configured storage are different.
Causes: • Storage board (STRGB)
• microSD
Troubleshooting Guides: 1. Check the storage type settings and correct if the wrong storage is set.

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-221).
Causes:
Troubleshooting Guides: 1. Check the UK-221 connector for proper connection and correct as necessary.
2. Rewrite the firmware.
3. Replace UK-221.

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 CPU board (CPUB) is not enough. • File memory capacity necessary for duplex printing is not enough.
CD203: File memory capacity on the CPU board (CPUB) is not enough.
Causes: • CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check CPUB for proper installation and correct as necessary.
2. Replace CPUB.
3. Replace BASEB.

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 CPU board (CPUB) fails to respond.
• CD212: Hardware related to the BTC compression function of the CPU board (CPUB) fails to respond.
Causes: • CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check CPUB for proper installation and correct as necessary.
2. Replace CPUB.
3. Replace BASEB.

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: • CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check CPUB for proper installation and correct as necessary.
2. Check BASEB connector for proper connection and correct as necessary.
3. Replace CPUB.
4. Replace BASEB.

Code: CD252
Description: No relay circuit boards for IC-420 mounting at IC-420 mount setting
EFI relay circuit boards (EFIRYB: VI-516) are not mounted when the IC-420 is set to mount setting at Service Mode.
Causes: • CPU board (CPUB)
• Base board (BASEB)
• EFI relay board (EFIRYB: VI-516)
Troubleshooting Guides: 1. If the IC-420 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. Check CPUB for proper installation and correct as necessary.
4. Replace EFIRYB.
5. Replace CPUB.
6. Replace BASEB.

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: • CPU board (CPUB)
• Base board (BASEB)
• USB hub board (USBHB EK-608 or EK-609)
Troubleshooting Guides: 1. Check the operation with another USB device.
2. Check USBHB for proper connection and correct as necessary.
3. Replace USBHB.
4. Replace CPUB.
5. Replace BASEB.

Code: CD262
Description: Extension network adapter installation error
• When the 2nd network card settings is set to “Set” but the upgrade kit (UK-221) is not installed.
• Upgrade Kit (UK-221) 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-221 connector for proper connection and correct as necessary.
3. Rewrite the firmware.
4. Replace UK-221.

Code: CD2D1
Description: VLAN setting configuration error
At start up of the MFP, the reception condition of VLAN setting activation is not satisfied.
Causes: • Storage board (STRGB)
• Backup board (ERB)
Troubleshooting Guides: 1. Check if all VLAN setting reception conditions are satisfied.
• The storage board (STRGB) must be installed.
• If the IC card reader is connected, the LDD of AU-201S has been installed.
• The software SW12 (bit1) has been set to ‘PKI unsupported’ (0x00). (PKI mode setting unavailable)
• Service Mode -> [Billing Setting] -> [Management Function Choice] is set to ‘Unset’.
• ‘TCP/IP” of Utility -> [Administrator] -> [Network] -> [TCP/IP Setting] -> [TCP/IP Setting1] is set to ‘ON”.
• ‘Network I/F Configuration” of Utility -> [Administrator] -> [Network] -> [Network I/F Configuration] is set to other than ‘Wireless Only”.

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 TPMB with a new one.
7. Replace CPUB.
8. Replace BASEB.
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: • CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Rewrite the firmware.
2. Turn OFF the main power switch and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.

Code: CD390
Description: Nonvolatile data checksum error
C-D390 code is normally shown when the CPU board (CPUB) is replaced with a new one.
Causes:
Troubleshooting Guides: 1. Wait until “Recover Data” appears. (MFP will reboot maximum 2 times by itself.) Touch the “Recover Data” button and follow the instructions that appear on the control panel to restore (backup) data.

Code: CD391
Description: Nonvolatile data save error (Storage)
Causes:
Troubleshooting Guides: Contact the responsible people of KM before taking some countermeasures.

Code: CD392
Description: Nonvolatile data save error (EEPROM)
The backup board (ERB) is replaced with a new one.
Causes: Backup board (ERB)
Troubleshooting Guides: 1. Replace the following components with new ones. Configure [New Release] in Service Mode before replacing the image transfer belt unit and the fusing unit. When the transfer roller has been replaced with a new one, perform [Counter clear]. • Developing unit/Y,M,C,K • Drum unit/Y,M,C,K • Toner cartridge/Y,M,C,K • Transfer belt unit • Fusing unit • Transfer roller • Feed roller, pick-up roller, separation roller (including options)
2. Turn OFF the main power switch and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.
3. Set the various setting values in the service mode again.
4. If the above actions do not solve the problem, contact KM.

Code: CD3B1, CD3B3, CD3B4, CD3B5
Description: • CD3B1: DB server startup failure
• CD3B3: DB access failure
• CD3B4: No DB definition file
• CD3B5: DB definition file error
• CD3B1: When starting the MFP, PostgreSQL server startup has not been successful.
• CD3B3: When starting the MFP, SQL DB access fails in PostgreSQL server startup processing.
• CD3B4: When starting the MFP, SQL DB definition file does not exist in PostgreSQL server startup processing.
• CD3B5: When starting the MFP, there is an error in SQL DB definition file in PostgreSQL server startup processing.
Causes: CPU board (CPUB)
Troubleshooting Guides: 1. Reboot the machine.
2. Check CPUB for proper installation and correct as necessary.
3. Rewrite the firmware.
4. Replace CPUB.

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.) 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: • Control panel
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check whether there is a strong electromagnetic noise source near the main body.
2. Check the connector between the control panel-BASEB CN7 for proper connection and correct as necessary.
3. Check CPUB for proper installation and correct as necessary.
4. Replace CPUB.
5. Replace BASEB.

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: • CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Turn OFF the main power switch and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.
2. Rewrite the firmware.
3. Replace CPUB.
4. Replace BASEB.

Code: CD704
Description: Finisher Flash ROM device error (When FS-533, FS-539, FS-539SD, FS-540, or FS-540SD 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 and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.
2. Rewrite the firmware.
3. Replace FSCB. (FS-533 / FS-539/FS-539SD / FS-540/FS-540SD)

Code: CD704
Description: Finisher Flash ROM device error (When JS-508 is installed)
An erase error or other device fault occurs during the finisher flash ROM writing.
Causes: JS control board (JSCB)
Troubleshooting Guides: 1. Turn OFF the main power switch and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.
2. Rewrite the firmware.
3. Replace JSCB.

Code: CDF50, CDF70, CDFA0
Description: • CDF50: ASIC image version failure
• CDF70: ASIC image access failure
• CDFA0: ASIC image error
Causes: • CCD unit
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between BASEB CN6-CCDB CN2 for proper connection and correct as necessary.
2. Check CPUB for proper installation and correct as necessary.
3. Rewrite the firmware.
4. Replace the CCD unit.
5. Replace CPUB.
6. Replace BASEB.

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 CPU board (CPUB) and the CIS module (CIS).
Causes: • CIS module (CIS)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connector between CIS CN2-BASEB CN5 for proper connection and correct as necessary.
2. Check CPUB for proper installation and correct as necessary.
3. Rewrite the firmware.
4. Replace CIS.
5. Replace CPUB.
6. Replace BASEB.

Code: CDXX
Description: Nonvolatile data error
Abnormality is detected by the abnormal check of each nonvolatile 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.
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: 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
CPU board (CPUB) is faulty.
Causes: • CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connectors on BASEB for proper connection and correct as necessary.
2. Replace CPUB.
3. Replace BASEB.

Code: CE002
Description: Message and method parameter failure
CPU board (CPUB) is faulty.
Causes: • Storage board (STRGB)
• CPU board (CPUB)
• Base board (BASEB)
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. Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Format] and perform the function.
3. Replace STRGB.
4. Replace CPUB.
5. Replace BASEB.

Code: CE012
Description: Failed to receive the entropy from Haveged
The machine fails to receive the entropy from Haveged.
Causes:
Troubleshooting Guides: 1. Turn OFF and ON the main power switch.

Code: CE013
Description: Virus scan engine startup failure (8 GB storage)
When the virus scan settings are effective, change from storage board (STRGB) to microSD (8 GB).
Causes: microSD
Troubleshooting Guides: 1. Reboot the machine.
2. To disable Virus Scan Functions.
3. Replace the microSD and replace the STRGB.

Code: CE014
Description: Virus scan engine startup failure (storage error)
The file or data that is necessary to start the virus scan has been lost.
Causes: Storage board (STRGB)
Troubleshooting Guides: 1. Reboot the machine. (MFP will reboot maximum 2 times by itself.)
2. Replace STRGB.

Code: CE015
Description: Secret information issue error
When starting the machine, the machine fails to issue the secret information.
Causes:
Troubleshooting Guides: 1. Turn OFF and ON the main power switch.

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: • CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connectors on BASEB for proper connection and correct as necessary.
2. Replace CPUB.
3. Replace BASEB.

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: • CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connectors on BASEB for proper connection and correct as necessary.
2. Replace CPUB.
3. Replace BASEB.

Code: CE202
Description: PDL interpreter error
An error inside the CPU board (CPUB) is detected during converting the PDL information.
Causes: • CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Turn OFF the main power switch and unplug the power cord. Connect the power cord after 15 sec. or more, 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 [Service Mode] -> [System 1] -> [Initialization] -> [Clear All Data] and perform the function.
4. Replace CPUB.
5. Replace BASEB.

Code: CE203
Description: Unrecoverable error
An error does not recover even after an auto recovery.
Causes: • CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Turn OFF the main power switch and unplug the power cord. Connect the power cord after 15 sec. or more, 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 [Service Mode] -> [System 1] -> [Initialization] -> [Clear All Data] and perform the function.
4. Update the firmware.
5. Perform the self-diagnostic function.
6. Replace CPUB.
7. Replace BASEB.

Code: CE204
Description: SIP / T.38 library loading failure
Installed an illegal library of SIP/T.38.
Causes:
Troubleshooting Guides: 1. Install a legal library of LK-117.

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: • CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Check the connectors on BASEB for proper connection and correct as necessary.
2. 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: • CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Turn OFF the main power switch and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.
2. Check CPUB for proper installation and correct as necessary.
3. Rewrite the firmware.
4. Replace CPUB.
5. Replace BASEB.

Code: CED01
Description: The authentication application information does not exist in the storage in the enhanced server authentication state.
With “Enhanced Server Authentication” set, no authentication application registration information is found in the storage.
Causes: • Storage board (STRGB)
• CPU board (CPUB)
• Base board (BASEB)
Troubleshooting Guides: 1. Turn OFF and ON the main power switch.
2. Check STRGB for proper installation and correct as necessary.
3. Check CPUB for proper installation and correct as necessary.
4. Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Format] -> [Logical Format] and perform the function.
5. Replace STRGB.
6. If the above actions do not solve the problem, contact KM.

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

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

Code: CFAXX
Description: Abort code
• When performing treatment (program) to the firmware controlling the MFP controller, a malfunction is detected when the control sequence went abnormal.
• In almost cases, when the control sequence goes abnormal in certain conditions and on certain timing, it results in malfunction.
Causes:
Troubleshooting Guides: 1. Execute [Self-diag. (Full)]. For details, see “ L.4 TROUBLESHOOTING USING SELF-DIAG. (FULL)”.
2. If the diagnosis result of [Self-diag. (Full)] is OK, since no hardware parts related troubles occur, retrieve the “Machine Management List” and send inquiries to KM also with the information. For details, see “ I.12 List Output”.

Code: CFBXX
Description: Abort code
• When performing treatment (program) to the firmware controlling the MFP controller, a malfunction is detected when the control sequence went abnormal.
• In almost cases, when the control sequence goes abnormal in certain conditions and on certain timing, it results in malfunction.
Causes:
Troubleshooting Guides: 1. Execute [Self-diag. (Full)]. For details, see “ L.4 TROUBLESHOOTING USING SELF-DIAG. (FULL)”.
2. If the diagnosis result of [Self-diag. (Full)] is OK, since no hardware parts related troubles occur, retrieve the “Machine Management List” and send inquiries to KM also with the information. For details, see “ I.12 List Output”.

Code: CFCXX
Description: Abort code
• When performing treatment (program) to the firmware controlling the MFP controller, a malfunction is detected when the control sequence went abnormal.
• In almost cases, when the control sequence goes abnormal in certain conditions and on certain timing, it results in malfunction.
Causes:
Troubleshooting Guides: 1. Execute [Self-diag. (Full)]. For details, see “ L.4 TROUBLESHOOTING USING SELF-DIAG. (FULL)”.
2. If the diagnosis result of [Self-diag. (Full)] is OK, since no hardware parts related troubles occur, retrieve the “Machine Management List” and send inquiries to KM also with the information. For details, see “ I.12 List Output”.

Code: CFDXX
Description: Abort code
• When performing treatment (program) to the firmware controlling the MFP controller, a malfunction is detected when the control sequence went abnormal.
• In almost cases, when the control sequence goes abnormal in certain conditions and on certain timing, it results in malfunction.
Causes:
Troubleshooting Guides: 1. Execute [Self-diag. (Full)]. For details, see “ L.4 TROUBLESHOOTING USING SELF-DIAG. (FULL)”.
2. If the diagnosis result of [Self-diag. (Full)] is OK, since no hardware parts related troubles occur, retrieve the “Machine Management List” and send inquiries to KM also with the information. For details, see “ I.12 List Output”.

Code: CFEXX
Description: Abort code
• When performing treatment (program) to the firmware controlling the MFP controller, a malfunction is detected when the control sequence went abnormal.
• In almost cases, when the control sequence goes abnormal in certain conditions and on certain timing, it results in malfunction.
Causes:
Troubleshooting Guides: 1. Execute [Self-diag. (Full)]. For details, see “ L.4 TROUBLESHOOTING USING SELF-DIAG. (FULL)”.
2. If the diagnosis result of [Self-diag. (Full)] is OK, since no hardware parts related troubles occur, retrieve the “Machine Management List” and send inquiries to KM also with the information. For details, see “ I.12 List Output”.

Code: CFFXX
Description: Abort code
• When performing treatment (program) to the firmware controlling the MFP controller, a malfunction is detected when the control sequence went abnormal.
• In almost cases, when the control sequence goes abnormal in certain conditions and on certain timing, it results in malfunction.
Causes:
Troubleshooting Guides: 1. Execute [Self-diag. (Full)]. For details, see “ L.4 TROUBLESHOOTING USING SELF-DIAG. (FULL)”.
2. If the diagnosis result of [Self-diag. (Full)] is OK, since no hardware parts related troubles occur, retrieve the “Machine Management List” and send inquiries to KM also with the information. For details, see “ I.12 List Output”.

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[SOLVED] Quick fix Konica-Minolta C550i list error codes