• 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.
• Remedy: 1 M6 operation check PWB-MC PJ3MC-3 (REM) PWB-MC PJ3MC-6 (LOCK) K-15. 2 Change PWB-MC.

• Code: C2257
• Description: Cleaning Brush Motor failure to turn
  • The Motor Lock signal remains HIGH for a predetermined continuous period of time while the Motor is turning.
• Remedy: 1 Check the M22 connector for proper connection and correct as necessary. 2 Check M22 for proper drive coupling and correct as necessary. 3 Check the PWB-MC connector for proper connection and correct as necessary. PWB-MC PJ2MC-9 (DC24 V) H-2. 4 M22 operation check PWB-MC PJ37MC-3 (REM) PWB-MC PJ37MC-6 (LOCK) K-3. 5 Change PWB-M.

• Code: C2258
• Description: Cleaning Brush Motor's turning at abnormal timing
  • The Motor Lock signal remains LOW for a predetermined continuous period of time while the Motor remains stationary.
• Remedy: 1 M22 operation check PWB-MC PJ37MC-3 (REM) PWB-MC PJ37MC-6 (LOCK) K-3. 2 Change PWB-MC.

• Code: C2351
• Description: Toner Suction Fan Motor/K’s failure to turn
  • The Motor Lock signal remains HIGH for a predetermined continuous period of time while the Motor is turning.
• Remedy: 1 Check the M23 connector for proper connection and correct as necessary. 2 Check M23 for proper drive coupling and correct as necessary. 3 M23 operation check PWB-MC PJ15MC-10 (REM) PWB-MC PJ15MC-12 (LOCK) C to D-21. 4 Change PWB-MC.

• Code: C2352
• Description: Toner 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.
• Remedy: 1 Check the M20 connector for proper connection and correct as necessary. 2 Check M20 for proper drive coupling and correct as necessary. 3 M20 operation check PWB-MC PJ15MC-1 (REM) PWB-MC PJ15MC-3 (LOCK) C to D- 20 to 21. 4 Change PWB-MC.

• Code: C2451
• Description: New Transfer Belt Unit resetting failure
  • A new installation is not detected when a new Transfer Cleaner Unit (Image Transfer Belt Unit) is installed.
• Remedy: 1 Reinstall Unit. 2 Change PWB-MC.

• Code: C2551
• Description: Abnormally low toner density detected Cyan TCR Sensor
  • T/C 0.21 % or less is detected ten consecutive times in the Developing Unit as validated through the toner replenishing amount determination control.
• Remedy: 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 Correct the TCR Sensor spring moving part if faulty. 4 Clean the TCR Sensor LED if dirty. 5 Change TCR Sensor C/M/Y. 6 M3, M4 operation check PWB-MC PJ8MC-1 to 4 PWB-MC PJ8MC-5 to 8. 7 Change Imaging Unit. 8 Change PWB-MC. 9 Change PWB-MFPC.

• Code: C2552
• Description: Abnormally high toner density detected Cyan TCR Sensor
  • T/C 15.5 % or more is detected ten consecutive times in the Developing Unit as validated through the toner replenishing amount determination control.
• Remedy: 1 Clean the TCR Sensor window on the underside of the Imaging Unit if dirty 2 Clean the TCR Sensor LED if dirty. 3 Correct the contact and/or WIRING of the TCR Sensor if faulty. 4 Change TCR Sensor C/M/Y. 5 Change Imaging Unit. 6 Change PWB-MC. 7 Change PWB-MFPC.