• Code: C2151
• Description: 2nd Image Transfer Roller Separation
  • The 2nd Image Transfer Pressure Position Sensor doesn’t turn ON (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 2nd Image Transfer Pressure Position Sensor doesn’t turn OFF (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.
• Remedy: 1 Check the connector of motor for proper connection and correct as necessary. 2 Change the Right Door Assy. 3 Change PWB-M.

• Code: C2152
• Description: Transfer Belt Separation
  • The 1st Image Transfer Pressure/Retraction Position Sensor doesn't turn ON (Retracting) even after the lapse of a given period of time after the 1st Image Transfer Pressure/Retraction Clutch has turned ON during the Transfer Belt is retracting. • The 1st Image Transfer Pressure/Retraction Position Sensor doesn't turn OFF (Pressuring) even after the lapse of a given period of time after the 1st Image Transfer Pressure/Retraction Clutch has turned ON during the Transfer Belt is pressuring.
• Remedy: 1 Check the M1 connector for proper connection and correct as necessary. 2 PC6 I/O check, Sensor check. 3 CL3 operation check PWB-M CNDM1-11 (ON) L-2. 4 M1 operation check PWB-M CNDM1-5 (REM) PWB-M CNDM1-8 (LOCK) L-2. 5 Change PWB-M.

• 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.
• Remedy: 1 Check the connector of motor for proper connection and correct as necessary. 2 Check the connector of motor for proper drive coupling and correct as necessary. 3 Check the PWB-M connector for proper connection and correct as necessary. 4 M2 operation check (C0018) PWB-M CNDM3-5 (REM) PWB-M CNDM3-8 (LOCK) C-21. 5 Change PWB-M.

• 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.
• Remedy: 1 M2 operation check PWB-M CNDM3-5 (REM) PWB-M CNDM3-8 (LOCK) C-21. 2 Change PWB-M.

• 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.
• Remedy: 1 Check the connector of motor for proper connection and correct as necessary. 2 Check the connector of motor for proper drive coupling and correct as necessary. 3 Check the PU1 connector for proper connection and correct as necessary. 4 Check the PWB-M connector for proper connection and correct as necessary. 5 M3 operation check PWB-M CNDM2-5 (REM) PWB-M CNDM2-8 (LOCK) C-20 to 21. 6 Change PU1. 7 Change PWB-M.

• 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 M3 operation check PWB-M CNDM2-5 (REM) PWB-M CNDM2-8 (LOCK) C-20 to 21. 2 Change PU1. 3 Change PWB-M.

• Code: C2451
• Description: Transfer Cleaner Unit New Article Release
  • 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-M.

• Code: C2551
• Description: Abnormally low toner density detected Cyan TCR Sensor
  • TC ratio in the developing machine, which is determined by Toner replenishing amount control mechanism, is 5 % or less for a given number of times consecutively.
• 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 M6, M7 operation check PWB-M CNDM2-10 to 13 (M6) PWB-M CNDM3-10 to 13 (M7) C-20 C-21. 4 Reinstall Imaging Unit. 5 Change Imaging Unit. 6 Change PWB-M. 7 Change PWB-MFP.