[SOLVED] Quick fix Konica-Minolta C550 list error codes

[SOLVED] Quick fix Konica-Minolta C550 list error codes

– Compatible Printer model: Konica-Minolta bizhub C550
– Konica-Minolta bizhub C550 Error Codes with quick guides:

• Code: C0104
• Description: Tray 3/4 feeder transportation motor failure to turn
  • The lock signal remains HIGH for a predetermined continuous period of time while the motor remains stationary.
• Troubleshooting Guides: 1 Check the M25 connector for proper connection and correct as necessary. 2 Check the connector of M25 for proper drive coupling and correct as necessary. 3 M25 operation check PFTDB CN12PFTDB-6 (LOCK) V-12. 4 Change M25. 5 Change PFTDB. 6 Change PRCB.

• Code: C0105
• Description: Tray 3/4 feeder transportation motor turning at abnormal timing
  • The lock signal remains LOW for a predetermined continuous period of time while the motor remains stationary.
• Troubleshooting Guides: 1 Check the M25 connector for proper connection and correct as necessary. 2 Check the connector of M25 for proper drive coupling and correct as necessary. 3 M25 operation check PFTDB CN12PFTDB-6 (LOCK) V-12. 4 Change M25. 5 Change PFTDB. 6 Change PRCB.

• Code: C0202
• Description: Tray 1 feeder up/down abnormality
  • The tray 1 upper limit sensor is not blocked even after the lapse of a given period of time after the lifting motion has been started.
• Troubleshooting Guides: 1 Check the M6 connector for proper connection and correct as necessary. 2 Check the connector of M6 for proper drive coupling and correct as necessary. 3 PS6 I/O check, sensor check PFTDB CN4PFTDB-3 (ON) P-4. 4 M6 operation check PFTDB CN18PFTDB-9 (ON) V-3. 5 Change M6. 6 Change PFTDB. 7 Change PRCB.

• Code: C0204
• Description: Tray 2 feeder up/down abnormality
  • The tray 2 upper limit sensor is not blocked even after the lapse of a given period of time after the lifting motion has been started.
• Troubleshooting Guides: 1 Check the M8 connector for proper connection and correct as necessary. 2 Check the connector of M8 for proper drive coupling and correct as necessary. 3 PS14 I/O check, sensor check PFTDB CN8BPFTDB-10 (ON) P-7. 4 M8 operation check PFTDB CN6PFTDB-9 (ON) V-4. 5 Change M8. 6 Change PFTDB. 7 Change PRCB.

• Code: C0206
• Description: Tray 3 feeder up/down abnormality
  • The tray 3 upper limit sensor is not blocked even after the lapse of a given period of time after the lifting motion has been started.
• Troubleshooting Guides: 1 Check the M23 connector for proper connection and correct as necessary. 2 Check the connector of M23 for proper drive coupling and correct as necessary. 3 PS22 I/O check, sensor check PFTDB CN10BPFTDB-6 (ON) V-6. 4 M23 operation check PFTDB CN11PFTDB-4 (ON) V-9. 5 Change M23. 6 Change PFTDB. 7 Change PRCB.

• Code: C0208
• Description: Tray 4 feeder up/down abnormality
  • The tray 4 upper limit sensor is not blocked even after the lapse of a given period of time after the lifting motion has been started.
• Troubleshooting Guides: 1 Check the M24 connector for proper connection and correct as necessary. 2 Check the connector of M24 for proper drive coupling and correct as necessary. 3 PS27 I/O check, sensor check PFTDB CN9BPFTDB-6 (ON) V-8. 4 M24 operation check PFTDB CN11PFTDB-2 (ON) V-9. 5 Change M23. 6 Change PFTDB. 7 Change PRCB.

• Code: C0211
• Description: Manual feed up/down abnormality
  • The bypass paper limit sensor (PS35) or bypass paper lower sensor (PS36) is not blocked even after the lapse of a given period of time after the manual feed tray up-and-down motion has been started.
• Troubleshooting Guides: 1 Check the M28 connector for proper connection and correct as necessary. 2 Check the connector of M28 for proper drive coupling and correct as necessary. 3 PS35 I/O check, sensor check PFTDB CN26BPFTDB<B>-10 (ON) P-12. 4 PS36 I/O check, sensor check PFTDB CN9BPFTDB<A>-11 (ON) P-11. 5 M28 operation check PFTDB CN26PFTDB<B>-11,12 P-12. 6 Change M28. 7 Change PFTDB.

• Code: C0216
• Description: LCT up/down abnormality
• Troubleshooting Guides:

• Code: C0301
• Description: Suction fan motor’s failure to turn
  • The fan lock signal remains HIGH for a predetermined continuous period of time while the motor remains stationary.
• Troubleshooting Guides: 1 Check the FM1 connector for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM1 operation check PRCB CN11PRCB-3 (REM) PRCB CN11PRCB-5 (LOCK) K-3. 4 Change FM1. 5 Change PRCB.

• Code: C0351
• Description: Paper cooling fan trouble
  • The fan lock signal remains HIGH for a predetermined continuous period of time while the motor remains stationary.
• Troubleshooting Guides: 1 Check the FM13 connector for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM13 operation check PRCB CN10PRCB-4 (REM) PRCB CN10PRCB-6 (LOCK) K-6. 4 Change FM13. 5 Change PRCB.

• Code: C1004
• Description: FNS communication error
• Troubleshooting Guides:

• Code: C1008
• Description: RU communication error
• Troubleshooting Guides:

• Code: C1101
• Description: Shift roller motor drive failure
• Troubleshooting Guides:

• Code: C1102
• Description: Tray ascent/descent drive failure
• Troubleshooting Guides:

• Code: C1103
• Description: Aligning plate drive failure
• Troubleshooting Guides:

• Code: C1104
• Description: Paper exit roller drive failure
• Troubleshooting Guides:

• Code: C1105
• Description: Paper exit drive failure
• Troubleshooting Guides:

• Code: C1106
• Description: Stapler movement drive failure
• Troubleshooting Guides:

• Code: C1107
• Description: Stapler clincher rotation drive failure
• Troubleshooting Guides:

• Code: C1108
• Description: Stapler rotation motor drive failure
• Troubleshooting Guides:

• Code: C1109
• Description: Stapler F unit drive failure
• Troubleshooting Guides:

• Code: C1110
• Description: Stapler R unit drive failure
• Troubleshooting Guides:

• Code: C1111
• Description: Stapler F unit clincher drive failure
• Troubleshooting Guides:

• Code: C1112
• Description: Stapler R unit clincher drive failure
• Troubleshooting Guides:

• Code: C1113
• Description: Saddle stitching stopper motor drive failure
• Troubleshooting Guides:

• Code: C1114
• Description: Stapler side guide motor drive failure
• Troubleshooting Guides:

• Code: C1115
• Description: Folding knife motor drive failure
• Troubleshooting Guides:

• Code: C1116
• Description: Folding transfer motor drive failure
• Troubleshooting Guides:

• Code: C1124
• Description: Sheet feeder up/down drive (lower)
• Troubleshooting Guides:

• Code: C1125
• Description: Sheet feeder up/down drive (upper)
• Troubleshooting Guides:

• Code: C1126
• Description: Sheet feeder transportation drive
• Troubleshooting Guides:

• Code: C1127
• Description: Punch kit movement motor drive failure
• Troubleshooting Guides:

• Code: C1132
• Description: Output OP punch driving motor malfunction
• Troubleshooting Guides:

• Code: C1137
• Description: Gate motor drive failure
• Troubleshooting Guides:

• Code: C1182
• Description: Shift motor mechanism failure
• Troubleshooting Guides:

• Code: C1183
• Description: Finishing option elevator drive malfunction
• Troubleshooting Guides:

• Code: C1190
• Description: Finishing option aligning bar moving mechanism malfunction 1
• Troubleshooting Guides:

• Code: C1191
• Description: Finishing option aligning bar moving mechanism malfunction 2
• Troubleshooting Guides:

• Code: C11A0
• Description: Paper holding drive failure
• Troubleshooting Guides:

• Code: C11A1
• Description: Finishing option exit roller pressure/retraction failure
• Troubleshooting Guides:

• Code: C11A2
• Description: Saddle exit roller pressure/retraction failure
• Troubleshooting Guides:

• Code: C11A3
• Description: Shutter drive failure
• Troubleshooting Guides:

Solve Konica-Minolta bizhub C550 Error codes

• Code: C11A4
• Description: Saddle exit motor failure
• Troubleshooting Guides:

• Code: C11A5
• Description: Saddle in & out guide motor failure
• Troubleshooting Guides:

• Code: C11A6
• Description: Saddle layable guide drive failure
• Troubleshooting Guides:

• Code: C11B0
• Description: Finishing option stapler unit CD drive failure
• Troubleshooting Guides:

• Code: C11B2
• Description: Finishing option stapling mechanism malfunction 1
• Troubleshooting Guides:

• Code: C11B5
• Description: Side staple 1 drive failure
• Troubleshooting Guides:

• Code: C11B6
• Description: Side staple 2 drive failure
• Troubleshooting Guides:

• Code: C11C0
• Description: Punch motor malfunction
• Troubleshooting Guides:

• Code: C11D0
• Description: Crease motor drive failure
• Troubleshooting Guides:

• Code: C11E0
• Description: Route switch malfunction
• Troubleshooting Guides:

• Code: C1301
• Description: Finishing option cooling fan motor failure
• Troubleshooting Guides:

• Code: C1402
• Description: FNS non-volatile memory failure
• Troubleshooting Guides:

• Code: C2101
• Description: PC charge cleaning malfunction
  • During backward movement of the cleaner, the charging cleaner home sensor is not blocked after a predetermined period of time has elapsed.
• Troubleshooting Guides: 1 Check the imaging unit/K for proper connection and correct as necessary. 2 Check the M15 connector for proper connection and correct as necessary. 3 PS43 I/O check, sensor check PRCB CN8PRCB-8 (ON) C-12. 4 PS44 I/O check, sensor check PRCB CN8PRCB-11 (ON) C-13. 5 M15 operation check PRCB CN8PRCB-3 to 4 C-12. 6 Change imaging unit /K. 7 Change M15. 8 Change PRCB.

• Code: C2151
• Description: Secondary transfer roller pressure welding alienation
  • The pressure welding alienation sensor doesn’t turn OFF (retracting) even after the lapse of a given period of time after the 2nd image transfer pressure retraction motor has started rotating during the 2nd image transfer roller is retracting. • The pressure welding alienation sensor doesn’t turn ON (pressuring) even after the lapse of a given period of time after the 2nd image transfer pressure retraction motor has started rotating during the 2nd image transfer roller is pressuring.
• Troubleshooting Guides: 1 Check the M3 connector for proper connection and correct as necessary. 2 PS50 I/O check, sensor check PRCB CN36PRCB-9 (ON) K-4. 3 M3 operation check PRCB CN11PRCB-1 (REM) K-3. 4 Change M3. 5 Change PRCB.

• Code: C2152
• Description: Transfer belt pressure welding alienation
  • At the completion of transfer belt pressure/ retraction operations, the pressure welding alienation sensor/K or the pressure welding alienation sensor/color is not in the status corresponding to each of the transfer belt pressure/retraction operations. See the table below. • Even after a predetermined period of time has elapsed since the transfer belt starts pressure/retraction operation, the pressure welding alienation sensor/K or the pressure welding alienation sensor/color is not in the status corresponding to each of the transfer belt pressure/retraction operations. See the table below. Operation Position Sensor status (K: Color) • Color and K retraction – K pressure • Color and K pressure – K pressure ON (not blocked) :OFF (blocked) pressure • Color and K retraction – Color and K pressure • K pressure – Color and K pressure Color and K pressure ON (not blocked):ON (not blocked) • K pressure – Color and K retraction • Color and K pressure -Color and K Color and K retraction OFF (blocked): OFF (blocked)
• Troubleshooting Guides: 1 Check the M21 connector for proper connection and correct as necessary. 2 PS51 I/O check, sensor check PRCB CN11PRCB-12 (ON) K-2. 3 PS52 I/O check, sensor check PRCB CN11PRCB-15 (ON) K-2. 4 M21 operation check PRCB CN17PRCB-1 to 4 K-2. 5 Change M21. 6 Change MFPB.

• Code: C2160
• Description: PC charge (C) malfunction
  • When electrostatic charge output is ON, electrostatic charge leak detection system continues to detect leaks for a predetermined period of time. In this case, C2164 is displayed at the first detection and then after the trouble is reset, a leak IU identification process is executed. Then the trouble code corresponding to the IU color is displayed.
• Troubleshooting Guides: 1 Check the imaging unit for proper connection and correct as necessary. 2 Check the HV1 connector for proper connection and correct as necessary. 3 Check the PRCB connector for proper connection and correct as necessary. 4 Change IU. 5 Change HV1. 6 Change PRCB.

• Code: C2161
• Description: PC charge (M) malfunction
  • When electrostatic charge output is ON, electrostatic charge leak detection system continues to detect leaks for a predetermined period of time. In this case, C2164 is displayed at the first detection and then after the trouble is reset, a leak IU identification process is executed. Then the trouble code corresponding to the IU color is displayed.
• Troubleshooting Guides: 1 Check the imaging unit for proper connection and correct as necessary. 2 Check the HV1 connector for proper connection and correct as necessary. 3 Check the PRCB connector for proper connection and correct as necessary. 4 Change IU. 5 Change HV1. 6 Change PRCB.

• Code: C2162
• Description: PC charge (Y) malfunction
  • When electrostatic charge output is ON, electrostatic charge leak detection system continues to detect leaks for a predetermined period of time. In this case, C2164 is displayed at the first detection and then after the trouble is reset, a leak IU identification process is executed. Then the trouble code corresponding to the IU color is displayed.
• Troubleshooting Guides: 1 Check the imaging unit for proper connection and correct as necessary. 2 Check the HV1 connector for proper connection and correct as necessary. 3 Check the PRCB connector for proper connection and correct as necessary. 4 Change IU. 5 Change HV1. 6 Change PRCB.

• Code: C2163
• Description: PC charge (K) malfunction
  • When electrostatic charge output is ON, electrostatic charge leak detection system continues to detect leaks for a predetermined period of time. In this case, C2164 is displayed at the first detection and then after the trouble is reset, a leak IU identification process is executed. Then the trouble code corresponding to the IU color is displayed.
• Troubleshooting Guides: 1 Check the imaging unit for proper connection and correct as necessary. 2 Check the HV1 connector for proper connection and correct as necessary. 3 Check the PRCB connector for proper connection and correct as necessary. 4 Change IU. 5 Change HV1. 6 Change PRCB.

• Code: C2164
• Description: PC charge malfunction
  • When electrostatic charge output is ON, electrostatic charge leak detection system continues to detect leaks for a predetermined period of time. In this case, C2164 is displayed at the first detection and then after the trouble is reset, a leak IU identification process is executed. Then the trouble code corresponding to the IU color is displayed.
• Troubleshooting Guides: 1 Check the imaging unit for proper connection and correct as necessary. 2 Check the HV1 connector for proper connection and correct as necessary. 3 Check the PRCB connector for proper connection and correct as necessary. 4 Change IU. 5 Change HV1. 6 Change PRCB.

• Code: C2204
• Description: Waste toner agitating motor’s failure to turn
  • The waste toner agitating motor lock sensor continues to be blocked or unblocked for a predetermined period of time when the motor is turning.
• Troubleshooting Guides: 1 Change the waste toner box. 2 Check the M20 connector for proper connection and correct as necessary. 3 Check the connector of motor for proper drive coupling and correct as necessary. 4 M20 operation check PRCB CN15PRCB-11 to 14 C-12. 5 Change M20. 6 Change PRCB.

• Code: C2253
• Description: Color PC drum motor’s failure to turn
  • The motor lock signal remains HIGH for a predetermined continuous period of time while the motor is turning.
• Troubleshooting Guides: 1 Check the M16 connector for proper connection and correct as necessary. 2 Check the M16 connector for proper drive coupling and correct as necessary. 3 Check the PRCB connector for proper connection and correct as necessary. 4 M16 operation check PRCB CN12PRCB-9 (REM) PRCB CN12PRCB-12 (LOCK) K-9. 5 Change M16. 6 Change PRCB.

• Code: C2254
• Description: Color PC drum motor’s turning at abnormal timing
  • The motor lock signal remains LOW for a predetermined continuous period of time while the motor remains stationary.
• Troubleshooting Guides: 1 Check the M16 connector for proper connection and correct as necessary. 2 Check the M16 connector for proper drive coupling and correct as necessary. 3 Check the PRCB connector for proper connection and correct as necessary. 4 M16 operation check PRCB CN12PRCB-9 (REM) PRCB CN12PRCB-12 (LOCK) K-9. 5 Change M16. 6 Change PRCB.

• Code: C2255
• Description: Color developing motor’s failure to turn
  • The motor lock signal remains HIGH for a predetermined continuous period of time while the motor is turning.
• Troubleshooting Guides: 1 Check the M17 connector for proper connection and correct as necessary. 2 Check the M17 connector for proper drive coupling and correct as necessary. 3 Check the PRCB connector for proper connection and correct as necessary. 4 M17 operation check PRCB CN12PRCB-14 (REM) PRCB CN12PRCB-17 (LOCK) K-8. 5 Change M17. 6 Change PRCB.

• Code: C2256
• Description: Color developing motor’s turning at abnormal timing
  • The motor lock signal remains LOW for a predetermined continuous period of time while the motor remains stationary.
• Troubleshooting Guides: 1 Check the M17 connector for proper connection and correct as necessary. 2 Check the M17 connector for proper drive coupling and correct as necessary. 3 Check the PRCB connector for proper connection and correct as necessary. 4 M17 operation check PRCB CN12PRCB-14 (REM) PRCB CN12PRCB-17 (LOCK) K-8. 5 Change M17. 6 Change PRCB.

• Code: C2257
• Description: Cleaner motor’s failure to turn
  • The motor lock signal remains HIGH for a predetermined continuous period of time while the motor is turning.
• Troubleshooting Guides: 1 Check the M38 connector for proper connection and correct as necessary. 2 Check the M38 connector for proper drive coupling and correct as necessary. 3 Check the PRCB connector for proper connection and correct as necessary. 4 M38 operation check PRCB CN13PRCB-11 (LOCK) K-10 to 11. 5 Change M38. 6 Change PRCB.

• Code: C2258
• Description: Cleaner motor’s turning at abnormal timing
  • The motor lock signal remains LOW for a predetermined continuous period of time while the motor remains stationary.
• Troubleshooting Guides: 1 Check the M38 connector for proper connection and correct as necessary. 2 Check the M38 connector for proper drive coupling and correct as necessary. 3 Check the PRCB connector for proper connection and correct as necessary. 4 M38 operation check PRCB CN13PRCB-11 (LOCK) K-10 to 11. 5 Change M38. 6 Change PRCB.

• Code: C2259
• Description: K developing motor’s failure to turn
  • The motor lock signal remains HIGH for a predetermined continuous period of time while the motor is turning.
• Troubleshooting Guides: 1 Check the M19 connector for proper connection and correct as necessary. 2 Check the M19 connector for proper drive coupling and correct as necessary. 3 Check the PRCB connector for proper connection and correct as necessary. 4 M19 operation check PRCB CN12PRCB-2 (REM) PRCB CN12PRCB-5 (LOCK) K-9. 5 Change M19. 6 Change PRCB.

• Code: C225A
• Description: K developing motor’s turning at abnormal timing
  • The motor lock signal remains LOW for a predetermined continuous period of time while the motor remains stationary.
• Troubleshooting Guides: 1 Check the M19 connector for proper connection and correct as necessary. 2 Check the M19 connector for proper drive coupling and correct as necessary. 3 Check the PRCB connector for proper connection and correct as necessary. 4 M19 operation check PRCB CN12PRCB-2 (REM) PRCB CN12PRCB-5 (LOCK) K-9. 5 Change M19. 6 Change PRCB.

• Code: C225B
• Description: K PC drum motor’s failure to turn
  • The motor lock signal remains HIGH for a predetermined continuous period of time while the motor is turning.
• Troubleshooting Guides: 1 Check the M18 connector for proper connection and correct as necessary. 2 Check the M18 connector for proper drive coupling and correct as necessary. 3 Check the PRCB connector for proper connection and correct as necessary. 4 M18 operation check PRCB CN13PRCB-15 (REM) PRCB CN13PRCB-18 (LOCK) K-10. 5 Change M18. 6 Change PRCB.

• Code: C225C
• Description: K PC drum motor’s turning at abnormal timing
  • The motor lock signal remains LOW for a predetermined continuous period of time while the motor remains stationary.
• Troubleshooting Guides: 1 Check the M18 connector for proper connection and correct as necessary. 2 Check the M18 connector for proper drive coupling and correct as necessary. 3 Check the PRCB connector for proper connection and correct as necessary. 4 M18 operation check PRCB CN13PRCB-15 (REM) PRCB CN13PRCB-18 (LOCK) K-10. 5 Change M18. 6 Change PRCB.

• Code: C2351
• Description: K toner suction fan motor’s failure to turn
  • The motor lock signal remains HIGH for a predetermined continuous period of time while the motor is turning.
• Troubleshooting Guides: 1 Check the FM8 connector for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM8 operation check PRCB CN10PRCB-10 (REM) PRCB CN10PRCB-12 (LOCK) K-5. 4 Change FM8. 5 Change PRCB.

• Code: C2352
• Description: Color toner suction fan motor’s failure to turn
  • The motor lock signal remains HIGH for a predetermined continuous period of time while the motor is turning.
• Troubleshooting Guides: 1 Check the FM7 connector for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM7 operation check PRCB CN10PRCB-7 (REM) PRCB CN10PRCB-9 (LOCK) K-5. 4 Change FM7. 5 Change PRCB.

• Code: C2353
• Description: IU cooling fan motor’s failure to turn
  • The motor lock signal remains HIGH for a predetermined continuous period of time while the motor is turning.
• Troubleshooting Guides: 1 Check the FM15 connector for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM15 operation check REYB PH CN5REYB PH-1 (REM) REYB PH CN5REYB PH-3 (LOCK) B-7. 4 Change FM15. 5 Change REYB/PH. 6 Change PRCB.

• Code: C2354
• Description: Rear side cooling fan motor’s failure to turn
  • The motor lock signal remains HIGH for a predetermined continuous period of time while the motor is turning.
• Troubleshooting Guides: 1 Check the FM16 connector for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM16 operation check PRCB CN26PRCB-2 (REM) PRCB CN26PRCB-3 (LOCK) C-16. 4 Change FM16. 5 Change PRCB.

• Code: C2451
• Description: Release new transfer belt unit
  • A new installation is not detected when a new transfer cleaner unit (image transfer belt unit) is installed.
• Troubleshooting Guides: 1 Reinstall unit. 2 Check there is a short circuit in the fuse of the transfer belt unit. 3 Check the PRCB connector for proper connection and correct as necessary. 4 Change PRCB.

• Code: C2551
• Description: Abnormally low toner density detected cyan 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.
• Troubleshooting Guides: 1 Perform image troubleshooting procedure if image density is low. 2 Clean the TCR sensor window on the underside of the imaging unit if dirty 3 Reinstall imaging unit. 4 Reinstall toner cartridge. 5 M9, M10, M11 operation check (At this time, IU must be non-installation.) M9: PRCB CN16PRCB-1 to 4 M10: PRCB CN16PRCB-5 to 8 M11: PRCB CN16PRCB-9 to 12 C-22 to 23. 6 M13, M14 operation check M13: PRCB CN17PRCB-5 to 8 M14: PRCB CN17PRCB-9 to 12 K-1. 7 If the toner empty sensor and its surroundings inside the sub hopper are dirtied with toner, clean them. 8 Change imaging unit. 9 Change PRCB.

• Code: C2552
• Description: Abnormally high toner density detected cyan TCR sensor
  • TC ratio in the developing unit which is determined by Toner replenishing amount control mechanism, is a predetermined value or more for a given number of times consecutively.
• Troubleshooting Guides: 1 Clean the TCR sensor window on the underside of the imaging unit if dirty. 2 Reinstall imaging unit. 3 Reinstall toner cartridge. 4 Change imaging unit. 5 Change PRCB. 6 Change sub hopper unit.

• Code: C2553
• Description: Abnormally low toner density detected magenta 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.
• Troubleshooting Guides: 1 Perform image troubleshooting procedure if image density is low. 2 Clean the TCR sensor window on the underside of the imaging unit if dirty 3 Reinstall imaging unit. 4 Reinstall toner cartridge. 5 M9, M10, M11 operation check (At this time, IU must be non-installation.) M9: PRCB CN16PRCB-1 to 4 M10: PRCB CN16PRCB-5 to 8 M11: PRCB CN16PRCB-9 to 12 C-22 to 23. 6 M13, M14 operation check M13: PRCB CN17PRCB-5 to 8 M14: PRCB CN17PRCB-9 to 12 K-1. 7 If the toner empty sensor and its surroundings inside the sub hopper are dirtied with toner, clean them. 8 Change imaging unit. 9 Change PRCB.

• Code: C2554
• Description: Abnormally high toner density detected magenta TCR sensor
  • TC ratio in the developing unit, which is determined by toner replenishing amount control mechanism, is a predetermined value or more for a given number of times consecutively.
• Troubleshooting Guides: 1 Clean the TCR sensor window on the underside of the imaging unit if dirty. 2 Reinstall imaging unit. 3 Reinstall toner cartridge. 4 Change imaging unit. 5 Change PRCB. 6 Change sub hopper unit.

• Code: C2555
• Description: 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.
• Troubleshooting Guides: 1 Perform image troubleshooting procedure if image density is low. 2 Clean the TCR sensor window on the underside of the imaging unit if dirty 3 Reinstall imaging unit. 4 Reinstall toner cartridge. 5 M9, M10, M11 operation check (At this time, IU must be non-installation.) M9: PRCB CN16PRCB-1 to 4 M10: PRCB CN16PRCB-5 to 8 M11: PRCB CN16PRCB-9 to 12 C-22 to 23. 6 M13, M14 operation check M13: PRCB CN17PRCB-5 to 8 M14: PRCB CN17PRCB-9 to 12 K-1. 7 If the toner empty sensor and its surroundings inside the sub hopper are dirtied with toner, clean them. 8 Change imaging unit. 9 Change PRCB.

• Code: C2556
• Description: Abnormally high toner density detected yellow TCR sensor
  • TC ratio in the developing unit, which is determined by toner replenishing amount control mechanism, is a predetermined value or more for a given number of times consecutively.
• Troubleshooting Guides: 1 Clean the TCR sensor window on the underside of the imaging unit if dirty. 2 Reinstall imaging unit. 3 Reinstall toner cartridge. 4 Change imaging unit. 5 Change PRCB. 6 Change sub hopper unit.

• Code: C2557
• Description: Abnormally low toner density detected black TCR sensor
  • When sampling data is determined in TC ratio calculation control, TCR sensor output is higher than a predetermined value for a predetermined number of times in a row even though there is toner in the sub hopper.
• Troubleshooting Guides: 1 Perform image troubleshooting procedure if image density is low. 2 Clean the TCR sensor window on the underside of the imaging unit if dirty 3 M12 operation check (At this time, IU must be non-installation.) PRCB CN16PRCB-13 to 16 C-22 4 M14 operation check PRCB CN17PRCB-9 to 12 K-1. 5 Reinstall imaging unit. 6 Reinstall toner cartridge. 7 If the toner empty sensor and its surroundings inside the sub hopper are dirtied with toner, clean them. 8 Change imaging unit /K. 9 Change PRCB.

• Code: C2558
• Description: Abnormally high toner density detected black TCR sensor
  • TC ratio in the developing unit, which is determined by toner replenishing amount control mechanism, is a predetermined value or more for a given number of times consecutively.
• Troubleshooting Guides: 1 Correct the TCR connection on the underside of the imaging unit if faulty. 2 Reinstall imaging unit. 3 Reinstall toner cartridge. 4 Change imaging unit. 5 Change PRCB. 6 Change sub hopper unit.

• Code: C2559
• Description: Cyan TCR sensor adjustment failure
  • TCR sensor automatic adjustment does not function properly, failing to adjust to an appropriate value.
• Troubleshooting Guides: 1 Clean the TCR sensor window on the underside of the imaging unit if dirty. 2 M9, M10, M11 operation check M9: PRCB CN16PRCB-1 to 4 M10: PRCB CN16PRCB-5 to 8 M11: PRCB CN16PRCB-9 to 12 C-22 to 23. 3 Reinstall imaging unit. 4 Change imaging unit. 5 Change PRCB.

• Code: C255A
• Description: Magenta TCR sensor adjustment failure
• Troubleshooting Guides: 1 Clean the TCR sensor window on the underside of the imaging unit if dirty. 2 M9, M10, M11 operation check M9: PRCB CN16PRCB-1 to 4 M10: PRCB CN16PRCB-5 to 8 M11: PRCB CN16PRCB-9 to 12 C-22 to 23. 3 Reinstall imaging unit. 4 Change imaging unit. 5 Change PRCB.

• Code: C255B
• Description: Yellow TCR sensor adjustment failure
• Troubleshooting Guides: 1 Clean the TCR sensor window on the underside of the imaging unit if dirty. 2 M9, M10, M11 operation check M9: PRCB CN16PRCB-1 to 4 M10: PRCB CN16PRCB-5 to 8 M11: PRCB CN16PRCB-9 to 12 C-22 to 23. 3 Reinstall imaging unit. 4 Change imaging unit. 5 Change PRCB.

• Code: C255C
• Description: Black TCR sensor adjustment failure
• Troubleshooting Guides: 1 Clean or correct each contact of the imaging unit if faulty. 2 M12 operation check PRCB CN16PRCB-13 to 16 C-22. 3 Reinstall imaging unit /K. 4 Change imaging unit /K. 5 Change PRCB.

• Code: C2650
• Description: Main backup media access error
  • Contact the responsible people of KMBT before taking some countermeasures.
• Troubleshooting Guides: 1 Check the connector (CN23PRCB) on PRCB, the connector (CN1SV ERB) on SV ERB, and the harness between the boards for proper connection and correct as necessary. 2 Change PRCB 1. Turn OFF the main power switch and replace the current PRCB with a new one. (When using a PRCB of another machine in service, be sure to use a PRCB installed in the same model.) 2. Update the PRCB firmware. 3. After completing the firmware update, turn OFF and 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. When the trouble cannot be solved, reinstall the removed PRCB to the original board. NOTE • When taking the above steps, check whether PRCB is defective or not without replacing the SV ERB. 3 Change SV ERB 1. Replace the current SV ERB with a new one. 2. Turn ON the main power switch and check to see that warm-up is started. (One minute is spent to prepare the new SV ERB for use. During the period, the control panel backlight stays off.) Make sure that malfunction codes other than C2650 or improper IU/TC placement is not detected. 3. Make the specified readjustments. 4 If the above actions do not solve the problem, contact KMBT.

• Code: C2651
• Description: EEPROM access error (IU C)
  • 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.
• Troubleshooting Guides: 1 Clean the connection between the imaging unit and the machine if dirty. 2 Reinstall imaging unit. 3 Check the harness for proper connection and correct as necessary. 4 Change imaging unit. 5 Change PRCB.

• Code: C2652
• Description: EEPROM access error (IU M)
  • 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.
• Troubleshooting Guides: 1 Clean the connection between the imaging unit and the machine if dirty. 2 Reinstall imaging unit. 3 Check the harness for proper connection and correct as necessary. 4 Change imaging unit. 5 Change PRCB.

• Code: C2653
• Description: EEPROM access error (IU Y)
  • The re-written data, which has been read out, checked and founded as error, is read out again and found as error. • The error was found when reading out the counter value.
• Troubleshooting Guides: 1 Clean the connection between the imaging unit and the machine if dirty. 2 Reinstall imaging unit. 3 Check the harness for proper connection and correct as necessary. 4 Change imaging unit. 5 Change PRCB.

• Code: C2654
• Description: EEPROM access error (IU K)
  • 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.
• Troubleshooting Guides: 1 Clean the connection between the imaging unit and the machine if dirty. 2 Reinstall imaging unit. 3 Check the harness for proper connection and correct as necessary. 4 Change imaging unit. 5 Change PRCB.

• Code: C2A01
• Description: EEPROM access error (TC C)
  • 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.
• Troubleshooting Guides: 1 Clean the connection between the toner cartridge and the machine if dirty. 2 Reinstall toner cartridge. 3 Check the harness for proper connection and correct as necessary. 4 Change toner cartridge. 5 Check that CN29 harness on PRCB has a ferrite core. If not, attach the ferrite core to the harness. 6 Change PRCB.

• Code: C2A02
• Description: EEPROM access error (TC M)
  • 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.
• Troubleshooting Guides: 1 Clean the connection between the toner cartridge and the machine if dirty. 2 Reinstall toner cartridge. 3 Check the harness for proper connection and correct as necessary. 4 Change toner cartridge. 5 Check that CN29 harness on PRCB has a ferrite core. If not, attach the ferrite core to the harness. 6 Change PRCB.

• Code: C2A03
• Description: EEPROM access error (TC Y)
  • The re-written data, which has been read out, checked and founded as error, is read out again and found as error. • The error was found when reading out the counter value.
• Troubleshooting Guides: 1 Clean the connection between the toner cartridge and the machine if dirty. 2 Reinstall toner cartridge. 3 Check the harness for proper connection and correct as necessary. 4 Change toner cartridge. 5 Check that CN29 harness on PRCB has a ferrite core. If not, attach the ferrite core to the harness. 6 Change PRCB.

• Code: C2A04
• Description: EEPROM access error (TC K)
  • 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.
• Troubleshooting Guides: 1 Clean the connection between the toner cartridge and the machine if dirty. 2 Reinstall toner cartridge. 3 Check the harness for proper connection and correct as necessary. 4 Change toner cartridge. 5 Check that CN29 harness on PRCB has a ferrite core. If not, attach the ferrite core to the harness. 6 Change PRCB.

• Code: C3101
• Description: Fusing roller separation failure
  • With the fusing roller being retracted, the pulse of the encoder sensor does not change even after the specified period of time has passed after the fusing pressure retraction motor started rotating. • With the fusing roller being pressed, the encoder pulse sensor does not change even after the specified period of time has passed after the fusing pressure retraction motor started rotating. • With the pressure roller being pressed, the pressure home sensor did not turn ON (pressed) even after the fusing retraction position sensor counted up the specified number of pulse after the fusing pressure retraction motor started rotating.
• Troubleshooting Guides: 1 Check the M29 connector for proper connection and correct as necessary. 2 PS55 I/O check, sensor check PRCB CN8PRCB-14 (ON) C-13. 3 M29 operation check PRCB CN8PRCB-1 to 2 (ON) C-12. 4 Change M29. 5 Change fusing unit. 6 Change PRCB.

• Code: C3102
• Description: Fusing roller failure to turn
  • When the IH power supply is turned ON, pulse signals are not input either of the heating roller rotation sensor/1 or the heating roller rotation sensor/2 within a predetermined period of time.
• Troubleshooting Guides: 1 Check the fusing unit for proper installation and correct as necessary. 2 Check the M30 connector for proper connection and correct as necessary. 3 PS56 I/O check, sensor check PRCB CN25PRCB-11 (ON) C-17 4 PS57 I/O check, sensor check PRCB CN25PRCB-14 (ON) C-17 5 M30 operation check PRCB CN7PRCB-3 (REM) PRCB CN7PRCB-6 (LOCK) K-7. 6 Change M30. 7 Change fusing unit. 8 Change PRCB.

• Code: C3201
• Description: Fusing motor failure to turn
  • The motor lock signal remains HIGH for a predetermined continuous period of time while the motor remains stationary.
• Troubleshooting Guides: 1 Check the M30 connector for proper connection and correct as necessary. 2 Check the loading status of the fusing unit drive, and correct the error as necessary. 3 Check the fusing unit, PRCB for proper connection and correct or change as necessary. 4 M30 operation check PRCB CN7PRCB-3 (REM) PRCB CN7PRCB-6 (LOCK) K-7. 5 Change M30. 6 Change PRCB.

• Code: C3202
• Description: Fusing motor turning at abnormal timing
  • The motor lock signal remains LOW for a predetermined continuous period of time while the motor remains stationary.
• Troubleshooting Guides: 1 Check the M30 connector for proper connection and correct as necessary. 2 Check the loading status of the fusing unit drive, and correct the error as necessary. 3 Check the fusing unit, PRCB for proper connection and correct or change as necessary. 4 M30 operation check PRCB CN7PRCB-3 (REM) PRCB CN7PRCB-6 (LOCK) K-7. 5 Change M30. 6 Change PRCB.

• Code: C3303
• Description: Fusing cooling fan motor/ 1 failure to turn
  • The fan motor lock signal remains HIGH for a predetermined continuous period of time while the motor remains stationary.
• Troubleshooting Guides: 1 Check the FM2 connector for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM2 operation check PRCB CN6PRCB-4 (REM) PRCB CN6PRCB-6 (LOCK) K-6. 4 Change FM2. 5 Change PRCB.

• Code: C3304
• Description: Fusing cooling fan motor/ 2 failure to turn
  • The fan motor lock signal remains HIGH for a predetermined continuous period of time while the motor remains stationary.
• Troubleshooting Guides: 1 Check the FM4 connector for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM4 operation check PRCB CN11PRCB-6 (REM) PRCB CN11PRCB-8 (LOCK) K-3. 4 Change FM4. 5 Change PRCB.

• Code: C3305
• Description: Fusing cooling fan motor/ 3 failure to turn
  • The fan motor lock signal remains HIGH for a predetermined continuous period of time while the motor remains stationary.
• Troubleshooting Guides: 1 Check the FM5 connector for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM5 operation check PRCB CN11PRCB-9 (REM) PRCB CN11PRCB-11 (LOCK) K-3. 4 Change FM5. 5 Change PRCB.

• Code: C3423
• Description: Fusing heaters trouble (pressurizing side)
  • After warm-up operation starts, the fusing pressure roller thermistor does not detect a temperature as high as a predetermined one though a predetermined period of time has elapsed.
• Troubleshooting Guides: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the upper right door. 3 Check the fusing unit, IHPU, MFPB and DCPU for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change IHPU. 6 Change PRCB. 7 Change DCPU.

• Code: C3424
• Description: Fusing heaters trouble (soaking side)
  • After warm-up operation starts, the soaking roller thermistor does not detect a temperature as high as a predetermined one though a predetermined period of time has elapsed.
• Troubleshooting Guides: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the upper right door. 3 Check the fusing unit, IHPU, MFPB and DCPU for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change IHPU. 6 Change PRCB. 7 Change DCPU.

• Code: C3425
• Description: Fusing heaters trouble (NC sensor)
  • After warm-up operation starts, the NC sensor does not detect a temperature as high as a predetermined one though a predetermined period of time has elapsed.
• Troubleshooting Guides: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the upper right door. 3 Check the fusing unit, IHPU, MFPB and REDB for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change IHPU. 6 Change PRCB. 7 Change REDB.

• Code: C3461
• Description: Release new fusing unit
  • A new installation is not detected when a new fusing Unit is installed.
• Troubleshooting Guides: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the fusing unit, PRCB for proper connection and correct or change as necessary. 3 Reinstall fusing unit. 4 Change fusing unit. 5 Change PRCB.

• Code: C3721
• Description: Fusing abnormally high temperature detection (Center of the heating roller)
  • The heating roller thermistor/3 continues to detect a temperature higher than a predetermined one for a predetermined period of time. • The signal is turned ON to activate the hard ratchet in the middle of the heating side.
• Troubleshooting Guides: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the upper right door. 3 Check the fusing unit, IHPU, MFPB and REDB for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change IHPU. 6 Change PRCB. 7 Change REDB.

• Code: C3722
• Description: Fusing abnormally high temperature detection (Edge of the heating roller)
  • The heating roller thermistor/2 continues to detect a temperature higher than a predetermined one for a predetermined period of time. • The signal is turned ON to activate the hard ratchet at the edges of the heating side.
• Troubleshooting Guides: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the upper right door. 3 Check the fusing unit, IHPU, MFPB and REDB for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change IHPU. 6 Change PRCB. 7 Change REDB.

• Code: C3723
• Description: Fusing abnormally high temperature detection (pressurizing side)
  • The fusing pressure roller thermistor continues to detect a temperature higher than a predetermined one for a predetermined period of time.
• Troubleshooting Guides: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the upper right door. 3 Check the fusing unit, IHPU, MFPB and DCPU for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change IHPU. 6 Change PRCB. 7 Change DCPU.

• Code: C3724
• Description: Fusing abnormally high temperature detection (soaking side)
  • The soaking roller thermistor/1 continues to detect a temperature higher than a predetermined one for a predetermined period of time. • The signal is turned ON to activate the hard ratchet on the soaking side.
• Troubleshooting Guides: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the upper right door. 3 Check the fusing unit, IHPU, MFPB and DCPU for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change IHPU. 6 Change PRCB. 7 Change DCPU.

• Code: C3725
• Description: Fusing abnormally high temperature detection (NS sensor)
  • The NC sensor continues to detect a temperature higher than a predetermined one for a predetermined period of time.
• Troubleshooting Guides: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the upper right door. 3 Check the fusing unit, IHPU, MFPB and REDB for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change IHPU. 6 Change PRCB. 7 Change REDB.

• Code: C3822
• Description: Fusing abnormally low temperature detection (Edge of the heating roller)
  • The heating roller thermistor/2 continues to detect a temperature lower than a predetermined one for a predetermined period of time.
• Troubleshooting Guides: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the upper right door. 3 Check the fusing unit, IHPU, PRCB and REDB for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change IHPU. 6 Change PRCB. 7 Change REDB.

• Code: C3823
• Description: Fusing abnormally low temperature detection (pressurizing side)
  • The fusing pressure roller thermistor continues to detect a temperature lower than a predetermined one for a predetermined period of time.
• Troubleshooting Guides: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the upper right door. 3 Check the fusing unit, IHPU, PRCB and DCPU for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change IHPU. 6 Change PRCB. 7 Change DCPU.

• Code: C3824
• Description: Fusing abnormally low temperature detection (soaking side)
  • The soaking roller thermistor/1 continues to detect a temperature lower than a predetermined one for a predetermined period of time.
• Troubleshooting Guides: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the upper right door. 3 Check the fusing unit, IHPU, PRCB and DCPU for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change IHPU. 6 Change PRCB. 7 Change DCPU.

• Code: C3825
• Description: Fusing abnormally low temperature detection (NC sensor)
  • The NC sensor continues to detect a temperature lower than a predetermined one for a predetermined period of time.
• Troubleshooting Guides: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the upper right door. 3 Check the fusing unit, IHPU, PRCB and REDB for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change IHPU. 6 Change PRCB. 7 Change REDB.

• Code: C3921
• Description: Fusing sensor wire breaks detection (Center of the heating roller)
  • At the warm-up stage, the heating roller thermistor/3 voltage does not decrease by predetermined steps (temperature rise) within a predetermined time.
• Troubleshooting Guides: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the upper right door. 3 Check the fusing unit, IHPU, PRCB and REDB for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change IHPU. 6 Change PRCB. 7 Change REDB.

• Code: C3922
• Description: Fusing sensor wire breaks detection (Edge of the heating roller)
  • At the warm-up stage, the heating roller thermistor/2 voltage does not decrease by predetermined steps (temperature rise) within a predetermined period of time.
• Troubleshooting Guides: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the upper right door. 3 Check the fusing unit, IHPU, PRCB and REDB for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change IHPU. 6 Change PRCB. 7 Change REDB.

• Code: C3923
• Description: Fusing sensor wire breaks detection (pressurizing side)
  • At the warm-up stage, the fusing pressure roller thermistor voltage does not decrease by predetermined steps (temperature rise) within a predetermined period of time.
• Troubleshooting Guides: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the upper right door. 3 Check the fusing unit, IHPU, PRCB and DCPU for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change IHPU. 6 Change PRCB. 7 Change DCPU.

• Code: C3924
• Description: Fusing sensor wire breaks detection (soaking side)
  • At the warm-up stage, the soaking roller thermistor/1 voltage does not decrease by predetermined steps (temperature rise) within a predetermined period of time
• Troubleshooting Guides: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the upper right door. 3 Check the fusing unit, IHPU, PRCB and DCPU for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change IHPU. 6 Change PRCB. 7 Change DCPU.

• Code: C3925
• Description: Fusing sensor wire breaks detection (NC sensor)
  • At the warm-up stage, the NC sensor voltage does not increase by predetermined steps (temperature rise) within a predetermined period of time.
• Troubleshooting Guides: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the upper right door. 3 Check the fusing unit, IHPU, PRCB and REDB for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change IHPU. 6 Change PRCB. 7 Change REDB.

• Code: C3B02
• Description: IH malfunction (CPU)
  • A failure in communication with the fusing CPU continues for a predetermined period of time.
• Troubleshooting Guides: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the upper right door. 3 Check the fusing unit, degaussing coil unit, IHPU, PRCB and REDB for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change degaussing coil unit. 6 Change IHPU. 7 Change PRCB. 8 Change REDB.

• Code: C3B03
• Description: IH malfunction (monitor)
  • Though the IH heater is ON, this status cannot be detected mechanically. (IH heater operation failure) • Though the IH heater is OFF, mechanically, the ON status is detected. (Malfunction of IH heater operation)
• Troubleshooting Guides: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the upper right door. 3 Check the fusing unit, degaussing coil unit, IHPU, PRCB and REDB for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change degaussing coil unit. 6 Change IHPU. 7 Change PRCB. 8 Change REDB.

• Code: C3B04
• Description: IH malfunction
  • Malfunction occurs in the fusing CPU
• Troubleshooting Guides: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the upper right door. 3 Check the fusing unit, degaussing coil unit, IHPU, PRCB and REDB for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change degaussing coil unit. 6 Change IHPU. 7 Change PRCB. 8 Change REDB.

• Code: C4101
• Description: Polygon motor rotation trouble
  • The polygon motor fails to turn stably even after the lapse of a given period of time after activating the polygon motor. • Motor lock signal detects HIGH for a given period time consecutively during the polygon motor is rotating.
• Troubleshooting Guides: 1 Check the connector for proper connection and correct as necessary. 2 Change PH unit. 3 Change REYB/PH. 4 Change PRCB.

• Code: C4301
• Description: PH cooling fan motor failure to turn
  • The fan motor lock signal remains HIGH for a predetermined continuous period of time while the motor remains stationary.
• Troubleshooting Guides: 1 Check the FM14 connector for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM14 operation check REYB PH CN4REYB PH-1 (REM) REYB PH CN4REYB PH-3 (LOCK) B-7. 4 Change FM14. 5 Change REYB/PH. 6 Change DCPU.

• Code: C4501
• Description: Laser malfunction
  • SOS signal is not detected even after the lapse of a given period of time after staring the laser output. • SOS signal is not detected for a given period of time during printing or IDC sensor adjustment.
• Troubleshooting Guides: 1 Check the connector for proper connection and correct as necessary. 2 Change PH unit. 3 Change REYB/PH. 4 Change PRCB.

• Code: C5104
• Description: Transfer belt motor’s failure to turn
  • The motor lock signal remains HIGH for a predetermined continuous period of time while the motor remains stationary.
• Troubleshooting Guides: 1 Check the M1 connector for proper connection and correct as necessary. 2 Check M1 for proper drive coupling and correct as necessary. 3 Check the PRCB connector for proper connection and correct as necessary. 4 M1 operation check PRCB CN13PRCB-3 (REM) PRCB CN13PRCB-6 (LOCK) K-11. 5 Change M1. 6 Change PRCB.

• Code: C5105
• Description: Transfer belt motor’s turning at abnormal timing
  • The motor lock signal remains LOW for a predetermined continuous period of time while the motor remains stationary.
• Troubleshooting Guides: 1 Check the M1 connector for proper connection and correct as necessary. 2 Check M1 for proper drive coupling and correct as necessary. 3 Check the PRCB connector for proper connection and correct as necessary. 4 M1 operation check PRCB CN13PRCB-3 (REM) PRCB CN13PRCB-6 (LOCK) K-11. 5 Change M1. 6 Change PRCB.

• Code: C5304
• Description: IH cooling fan motor/1’s failure to turn
  • The fan lock signal remains HIGH for a predetermined continuous period of time while the motor remains stationary.
• Troubleshooting Guides: 1 Check the FM10 connector for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM10 operation check PRCB CN26PRCB-4 (REM) PRCB CN26PRCB-6 (LOCK) C-16. 4 Change FM10. 5 Change PRCB.

• Code: C5305
• Description: IH cooling fan motor/2’s failure to turn
  • The fan lock signal remains HIGH for a predetermined continuous period of time while the motor remains stationary.
• Troubleshooting Guides: 1 Check the FM11 connector for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM11 operation check PRCB CN26PRCB-7 (REM) PRCB CN26PRCB-9 (LOCK) C-16. 4 Change FM11. 5 Change PRCB.

• Code: C5306
• Description: IH cooling fan motor/3’s failure to turn
  • The fan lock signal remains HIGH for a predetermined continuous period of time while the motor remains stationary.
• Troubleshooting Guides: 1 Check the FM12 connector for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM12 operation check PRCB CN26PRCB-10 (REM) PRCB CN26PRCB-12 (LOCK) C-15 to 16. 4 Change FM12. 5 Change PRCB.

• Code: C5351
• Description: Power supply cooling fan motor/1’s failure to turn
  • The fan lock signal remains HIGH for a predetermined continuous period of time while the motor remains stationary.
• Troubleshooting Guides: 1 Check the FM9 connector for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM9 operation check DCPU PJ8DCPU-3 (LOCK) R to S-28. 4 Change FM9. 5 Change DCPU. 6 Change PRCB.

• Code: C5354
• Description: Ozone ventilation fan motor’s failure to turn
  • The fan lock signal remains HIGH for a predetermined continuous period of time while the motor remains stationary.
• Troubleshooting Guides: 1 Check the FM6 connector for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM6 operation check PRCB CN6PRCB-1 (REM) PRCB CN6PRCB-3 (LOCK) K-6 to 7. 4 Change FM6. 5 Change MFPB.

• Code: C5356
• Description: Cooling fan motor’s failure to turn
  • The fan lock signal remains HIGH for a predetermined continuous period of time while the motor remains stationary.
• Troubleshooting Guides: 1 Check the FM3 connector for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM3 operation check PRCB CN10PRCB-1 (REM) PRCB CN10PRCB-3 (LOCK) K-6. 4 Change FM3. 5 Change MFPB.

• Code: C5370
• Description: MFP control board cooling fan motor’s failure to turn
  • The fan lock signal remains HIGH for a predetermined continuous period of time while the motor remains stationary.
• Troubleshooting Guides: 1 Check the FM17 connector for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM17 operation check REYB/SL PJ3REYB/SL-3 (LOCK) L-25. 4 Change FM17. 5 Change REYB/SL. 6 Change MFPB.

• Code: C5371
• Description: MFP control board CPU cooling fan motor’s failure to turn
  • The fan lock signal remains HIGH for a predetermined continuous period of time while the motor remains stationary.
• Troubleshooting Guides: 1 Check the fan connector for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 Fan motor operation check MFPB PJ20MFPBL-3 (LOCK) T-26. 4 Change MFPB.

• Code: C6102
• Description: Drive system home sensor malfunction
  • The scanner home sensor is unable to detect the scanner located at its home position. • The scanner home sensor is unable to detect a scanner even when the scanner motor has been driven to move the scanner over the maximum travelling distance. • The scanner home sensor detects the scanner when the scanner has moved the maximum travelling distance from the position, at which it blocks the scanner home sensor.
• Troubleshooting Guides: 1 Correct or change the scanner drive (cable, pulley, gear, belt) if it is faulty. 2 Correct the scanner motor set screw if loose. 3 Adjust [Image Position Leading Edge] and [Feed Direction Adjustment]. 4 Check the PS201, M201, REYB/SCAN and IPB connector for proper connection and correct as necessary. 5 PS201 I/O check, sensor check IPB CN11IPB-3 (ON) T-15 6 M201 operation check REYB/SCAN CN5REYB/SCAN-4 to 7 Q to R-18. 7 Change REYB/SCAN. 8 Change IPB.

• Code: C6103
• Description: Slider over running
  • The scanner home sensor detects the scanner at its home position during a period of time that begins with the time when a prescan command and a scan preparation command are executed and ends when a home return command is executed.
• Troubleshooting Guides: 1 Correct or change the scanner drive (cable, pulley, gear, belt) if it is faulty. 2 Correct the scanner motor set screw if loose. 3 Adjust [Image Position Leading Edge] and [Feed Direction Adjustment]. 4 Check the PS201, M201, REYB/SCAN and IPB connector for proper connection and correct as necessary. 5 PS201 I/O check, sensor check IPB CN11IPB-3 (ON) T-15 6 M201 operation check REYB/SCAN CN5REYB/SCAN-4 to 7 Q to R-18. 7 Change REYB/SCAN. 8 Change IPB.

• Code: C6301
• Description: Optical cooling fan motor’s failure to turn
  • The fan lock signal remains HIGH for a predetermined continuous period of time while the motor remains stationary.
• Troubleshooting Guides: 1 Check the FM201 connector for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 M202 operation check REYB/SCAN CN2REYB/SCAN-3 (LOCK) Q to R-18. 4 Change REYB/SCAN. 5 Change IPB.

• Code: C6704
• Description: Image input time out
  • Image data is not input from the image processing board (IPB) to the printer control board (PRCB).
• Troubleshooting Guides: 1 Select [Service Mode] – [State Confirmation] – [Memory/HDD Adj.] – [Memory Bus Check] – [Scanner-Memory], and conduct the memory bus function. 2 Check the connectors between IPB and MFPB for proper connection and correct as necessary. 3 Change MFPB. 4 Change IPB.

• 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.
• Troubleshooting Guides: 1 Correct the harness connection between CCDB and IPB if faulty. 2 Check for possible extraneous light and correct as necessary. 3 Clean the lens, mirrors, CCD surface, and shading sheet if dirty 4 Correct reflective mirror of the scanner if faulty, or change scanner. 5 Change CCD sensor unit. 6 Change IPB.

• Code: C6F01
• Description: Scanner sequence trouble 1
  • The original transport interval becomes shorter than the designed value due to an original transport control error in original reading in ADF.
• Troubleshooting Guides: 1 Correct the harness connection between main body and ADF if faulty. 2 Change DFCB. 3 Change MFPB.

• Code: C8101
• Description: Before reading pressure welding alienation mechanism
• Troubleshooting Guides:

• Code: C8102
• Description: Turn around pressure welding alienation trouble
• Troubleshooting Guides:

• Code: C8103
• Description: Lift up mechanism trouble
• Troubleshooting Guides:

• Code: C8104
• Description: Glass movement trouble
• Troubleshooting Guides:

• Code: C8302
• Description: Read cooling fan trouble
• Troubleshooting Guides:

• Code: C9401
• Description: Exposure turning on the lamp trouble detection
  • The output from the CCD sensor is a predetermined value or less during CCD sensor gain adjustment.
• Troubleshooting Guides: 1 Check the connection between the lamp harness and the inverter board, and correct if necessary. 2 Check the connection between REYB/ SCAN and the inverter board, and correct if necessary. 3 Check the connection between REYB/ SCAN and IPB, and correct if necessary. 4 Check that the connection between CCDB and IPB, and correct if necessary. 5 Change INVB. 6 Change scanner assy. 7 Change IPB. 8 Change CCDB. 9 Change REYB/SCAN.

• Code: C9402
• Description: Exposure turning on the lamp abnormally detection
  • 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.
• Troubleshooting Guides: 1 Check the connection between the lamp harness and the inverter board, and correct if necessary. 2 Check the connection between REYB/ SCAN and the inverter board, and correct if necessary. 3 Check the connection between REYB/ SCAN and IPB, and correct if necessary. 4 Check that the connection between CCDB and IPB, and correct if necessary. 5 Change INVB. 6 Change scanner assy. 7 Change IPB. 8 Change CCDB. 9 Change REYB/SCAN.

• Code: CA051
• Description: Standard controller configuration failure
  • The controller of the printer control board (PRCB) is faulty.
• 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 of the MFP board (MFPB) for proper connection and correct as necessary. 3 Change MFPB

• Code: CA052
• Description: Controller hardware error
  • A controller hardware error is detected in the network I/F.
• 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 of the MFP board (MFPB) for proper connection and correct as necessary. 3 Change MFPB

• Code: CA053
• Description: Controller start failure
  • A controller start failure is detected in the controller interface.
• 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 of the MFP board (MFPB) for proper connection and correct as necessary. 3 Change MFPB

• Code: CB001 … CB119
• Description: FAX Board Error
• Troubleshooting Guides:

• Code: CD004 … CD011
• Description: HDD error
• Troubleshooting Guides:

• Code: CF001 … CFF15
• Description: MFP Control Board error
• Troubleshooting Guides:

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