• 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 MFPB connector for proper connection and correct as necessary. 4 M2 operation check (C0018) MFPB CNDM3-5 (REM) MFPB CNDM3-8 (LOCK) C-21. 5 Change MFPB.

• 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 MFPB CNDM3-5 (REM) MFPB CNDM3-8 (LOCK) C-21. 2 Change MFPB.

• 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 DCPU connector for proper connection and correct as necessary. 4 Check the MFPB connector for proper connection and correct as necessary. 5 M3 operation check MFPB CNDM2-5 (REM) MFPB CNDM2-8 (LOCK) C-20. 6 Change DCPU. 7 Change MFPB.

• 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 MFPB CNDM2-5 (REM) MFPB CNDM2-8 (LOCK) C-20. 2 Change DCPU. 3 Change MFPB.

• 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 MFPB.

• 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 MFPB CNDM2-10 to 13 (M6) MFPB CNDM3-10 to 13 (M7) C-20 C-21. 4 Reinstall imaging unit. 5 Change imaging unit. 6 Change MFPB. 7 Change PRCB.

• Code: C2552
• Description: Abnormally high toner density detected cyan TCR sensor
  • TC ratio in the developing machine, which is determined by Toner replenishing amount control mechanism, is 12 % or more for a given number of times consecutively.
• Remedy: 1 Clean the TCR sensor window on the underside of the imaging unit if dirty 2 Reinstall imaging unit. 3 Change imaging unit. 4 Change MFPB. 5 Change PRCB

• Code: C2553
• Description: Abnormally low toner density detected magenta 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 MFPB CNDM2-10 to 13 (M6) MFPB CNDM3-10 to 13 (M7) C-20 C-21. 4 Reinstall imaging unit. 5 Change imaging unit. 6 Change MFPB. 7 Change PRCB.