• Code: C2151
• Description: Secondary transfer roller pressure welding alienation
  • The 2nd transfer pressure sensor (PS50) doesn't unblock (retracting) even after the lapse of a given period of time after the 2nd transfer pressure motor (M3) has started rotating during the 2nd image transfer roller is retracting. • The 2nd transfer pressure sensor (PS50) doesn't block (pressuring) even after the lapse of a given period of time after the 2nd transfer pressure motor (M3) has started rotating during the 2nd image transfer roller is pressuring.
• Causes: • 2nd transfer pressure sensor (PS50) • 2nd transfer pressure motor (M3) • Paper feed/transport drive board (PFTDB) • Printer control board (PRCB)
• Remedy: 1 Check the connector between M3-relay CN271BPFTDB CN10 for proper connection and correct as necessary. 2 Check the connector of M3 for proper drive coupling and correct as necessary. 3 Check the connector between PS50-relay CN271APFTDB CN3 for proper connection and correct as necessary. 4 PS50 I/O check, sensor check PFTDB CN3-9 (ON) 5-P. 5 M3 operation check PFTDB CN10-1 to 2 5-P. 6 Replace M3. 7 PFTDB ICP16 conduction check. 8 Replace PFTDB. 9 Replace PRCB.

• Code: C2152
• Description: Transfer belt pressure welding alienation
  • At the completion of transfer belt pressure/retraction operations, the 1st transfer pressure sensor/K (PS51) 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 1st transfer pressure sensor/K (PS51) is not in the status corresponding to each of the transfer belt pressure/retraction operations. See the table below.
• Causes: • 1st transfer pressure sensor/K (PS51) • 1st transfer pressure sensor/YMC (PS52) • 1st transfer pressure motor (M21) • Printer control board (PRCB)
• Remedy: 1 Check the connector between M21-relay CN428- PRCB CN4 for proper connection and correct as necessary. 2 Check the connector of M21 for proper drive coupling and correct as necessary. 3 Check the transfer roller pressure gear of the transfer belt unit for proper engagement and the roller for rolling operation, and correct any faulty motion. 4 Check the connector between PS51-relay CN297- PRCB CN6 for proper connection and correct as necessary. 5 PS51 I/O check, sensor check PRCB CN6-1 (ON) 22-C. 6 M21 operation check PRCB CN4-5 to 8 3 to 4-K. 7 Replace M21. 8 Replace the transfer belt unit. 9 PRCB ICP5 or ICP24 conduction check. 10 Replace PRCB.

• 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.
• Causes: • Imaging unit • High voltage unit/1 (HV1) • Printer control board (PRCB)
• Remedy: 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 Replace IU. 5 Replace HV1. 6 Replace 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.
• Causes: • Imaging unit • High voltage unit/1 (HV1) • Printer control board (PRCB)
• Remedy: 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 Replace IU. 5 Replace HV1. 6 Replace 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.
• Causes: • Imaging unit • High voltage unit/1 (HV1) • Printer control board (PRCB)
• Remedy: 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 Replace IU. 5 Replace HV1. 6 Replace 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.
• Causes: • Imaging unit • High voltage unit/1 (HV1) • Printer control board (PRCB)
• Remedy: 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 Replace IU. 5 Replace HV1. 6 Replace 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.
• Causes: • Imaging unit • High voltage unit/1 (HV1) • Printer control board (PRCB)
• Remedy: 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 Replace IU. 5 Replace HV1. 6 Replace PRCB.

• Code: C2204
• Description: Waste toner transport motor’s failure to turnThe waste toner lock sensor (PS23) continues to be blocked or unblocked for a predetermined period of time when the motor is turning.
• Causes: • Waste toner lock sensor (PS23) • Waste toner transport motor (M20) • PH relay board (PHRYB) • Printer control board (PRCB)
• Remedy: 1 Clean the PS23 if it has toner or paper dust, etc. 2 Change the waste toner box. 3 Check the connector between M20-PRCB CN17 for proper connection and correct as necessary. 4 Check the connector of M20 for proper drive coupling and correct as necessary. 5 Check the connector between PS23-PHRYB CN12 for proper connection and correct as necessary. 6 PS23 I/O check, sensor check PRCB CN17-18 (ON) 18-C. 7 M20 operation check PHRYB CN12-6 to 9 9-B. 8 Replace M20. 9 PHRYB ICP6 conduction check. 10 Replace PHRYB. 11 PRCB ICP15 conduction check. 12 Replace PRCB.