• Code: C2559
• Description: Cyan TCR sensor adjustment failure
  TCR sensor automatic adjustment does not function properly, failing to adjust to an appropriate value.
• Remedy: 1 Reinstall developing unit. 2 Check the connector between developing unit-FRB CN13, CN14, CN15, CN16 for proper connection and correct as necessary. 3 Check the connector between FRB CN1, CN3-PRCB CN7, CN9 for proper connection and correct as necessary. 4 M10 operation check PRCB CN14-17 to 20 20-C 5 M6, M7, M8, M9 operation check PRCB CN14-13 to 16 (M6) PRCB CN14-9 to 12 (M7) PRCB CN14-5 to 8 (M8) PRCB CN14-1 to 4 (M9) 19 to 20-C. 6 Replace the developing unit. 7 Replace FRB. 8 PRCB ICP21, ICP40, ICP43, ICP44, ICP46 conduction check. 9 Replace PRCB.

• Code: C255A
• Description: Magenta TCR sensor adjustment failure
  TCR sensor automatic adjustment does not function properly, failing to adjust to an appropriate value.
• Remedy: 1 Reinstall developing unit. 2 Check the connector between developing unit-FRB CN13, CN14, CN15, CN16 for proper connection and correct as necessary. 3 Check the connector between FRB CN1, CN3-PRCB CN7, CN9 for proper connection and correct as necessary. 4 M10 operation check PRCB CN14-17 to 20 20-C 5 M6, M7, M8, M9 operation check PRCB CN14-13 to 16 (M6) PRCB CN14-9 to 12 (M7) PRCB CN14-5 to 8 (M8) PRCB CN14-1 to 4 (M9) 19 to 20-C. 6 Replace the developing unit. 7 Replace FRB. 8 PRCB ICP21, ICP40, ICP43, ICP44, ICP46 conduction check. 9 Replace PRCB.

• Code: C255B
• Description: Yellow TCR sensor adjustment failure
  TCR sensor automatic adjustment does not function properly, failing to adjust to an appropriate value.
• Remedy: 1 Reinstall developing unit. 2 Check the connector between developing unit-FRB CN13, CN14, CN15, CN16 for proper connection and correct as necessary. 3 Check the connector between FRB CN1, CN3-PRCB CN7, CN9 for proper connection and correct as necessary. 4 M10 operation check PRCB CN14-17 to 20 20-C 5 M6, M7, M8, M9 operation check PRCB CN14-13 to 16 (M6) PRCB CN14-9 to 12 (M7) PRCB CN14-5 to 8 (M8) PRCB CN14-1 to 4 (M9) 19 to 20-C. 6 Replace the developing unit. 7 Replace FRB. 8 PRCB ICP21, ICP40, ICP43, ICP44, ICP46 conduction check. 9 Replace PRCB.

• Code: C255C
• Description: Black TCR sensor adjustment failure
  TCR sensor automatic adjustment does not function properly, failing to adjust to an appropriate value.
• Remedy: 1 Reinstall developing unit. 2 Check the connector between developing unit-FRB CN13, CN14, CN15, CN16 for proper connection and correct as necessary. 3 Check the connector between FRB CN1, CN3-PRCB CN7, CN9 for proper connection and correct as necessary. 4 M10 operation check PRCB CN14-17 to 20 20-C 5 M6, M7, M8, M9 operation check PRCB CN14-13 to 16 (M6) PRCB CN14-9 to 12 (M7) PRCB CN14-5 to 8 (M8) PRCB CN14-1 to 4 (M9) 19 to 20-C. 6 Replace the developing unit. 7 Replace FRB. 8 PRCB ICP21, ICP40, ICP43, ICP44, ICP46 conduction check. 9 Replace PRCB.

• Code: C2561
• Description: Cyan TCR sensor failure
  TCR sensor automatic adjustment does not function properly, failing to adjust to an appropriate value.
• Remedy: 1 Reinstall developing unit. 2 Check the connector between developing unit-FRB CN13, CN14, CN15, CN16 for proper connection and correct as necessary. 3 Check the connector between FRB CN1, CN3-PRCB CN7, CN9 for proper connection and correct as necessary. 4 Replace the developing unit. 5 Replace FRB. 6 Replace PRCB.

• Code: C2562
• Description: Magenta TCR sensor failure
  TCR sensor automatic adjustment does not function properly, failing to adjust to an appropriate value.
• Remedy: 1 Reinstall developing unit. 2 Check the connector between developing unit-FRB CN13, CN14, CN15, CN16 for proper connection and correct as necessary. 3 Check the connector between FRB CN1, CN3-PRCB CN7, CN9 for proper connection and correct as necessary. 4 Replace the developing unit. 5 Replace FRB. 6 Replace PRCB.

• Code: C2563
• Description: Yellow TCR sensor failure
  TCR sensor automatic adjustment does not function properly, failing to adjust to an appropriate value.
• Remedy: 1 Reinstall developing unit. 2 Check the connector between developing unit-FRB CN13, CN14, CN15, CN16 for proper connection and correct as necessary. 3 Check the connector between FRB CN1, CN3-PRCB CN7, CN9 for proper connection and correct as necessary. 4 Replace the developing unit. 5 Replace FRB. 6 Replace PRCB.

• Code: C2564
• Description: Black TCR sensor failure
  TCR sensor automatic adjustment does not function properly, failing to adjust to an appropriate value.
• Remedy: 1 Reinstall developing unit. 2 Check the connector between developing unit-FRB CN13, CN14, CN15, CN16 for proper connection and correct as necessary. 3 Check the connector between FRB CN1, CN3-PRCB CN7, CN9 for proper connection and correct as necessary. 4 Replace the developing unit. 5 Replace FRB. 6 Replace PRCB.