• Code: C11C5
• Description: Paper size detect board failure. Detection timing <When FS-535+PK-521 is installed> The size of a transported paper is not detected, causing no punch operation.
• Causes: Paper size detect board (PSDTB)
• Remedy: 1 Check the sensor part of PSDTB, to clean if it is dirty. 2 Check the connector between PSDTB-PKCB CN38 for proper connection, and correct as necessary. - PK-521 4-E 3 Replace PSDTB

• Code: C11E1
• Description: Paper exit switching drive malfunction <When FS-534 is installed> The exchange folded paper output sensor (PS30) is not blocked or unblocked even after the set period of time has elapsed after the FNS entry transport motor (M2) is turned ON.
• Causes: • FNS entry transport motor (M2) • Exchange folded paper output sensor (PS30) • FS control board (FSCB)
• Remedy: 1 Check the connector between M2-FSCB J9 for proper connection, and correct as necessary. 2 Check the connector of M2 for proper drive coupling, and correct as necessary. 3 Check the connector between PS30-FSCB J4 for proper connection, and correct as necessary. 4 PS30 I/O check, sensor check FSCB J4<A>-15 (ON) FS-534 12-C 5 M2 operation check FSCB J9<A>-1 to 4 FS-534 10 to 11-B to C 6 Replace M2 7 Replace FSCB

• Code: C2101
• Description: Charge cleaning motor/K’s malfunction During backward and return movement of the cleaner material, the charging cleaner home sensor is not blocked after a predetermined period of time has elapsed.
• Causes: • Drum unit • Charging cleaner home sensor (PS43) • Charging cleaner return sensor (PS44) • Charge cleaning motor/K (M15) • PH relay board (PHRYB) • Printer control board (PRCB)
• Remedy: 1 Check the drum unit for proper connection and correct as necessary. 2 Check the connector between M15-PHRYB CN12 for proper connection, and correct as necessary. 3 Check the M15 connector for proper connection and correct as necessary. 4 Check the connector between PS43-PHRYB CN2 for proper connection, and correct as necessary. 5 Check the connector between PS44-PHRYB CN2 for proper connection, and correct as necessary. 6 PS43 I/O check, sensor check PHRYB CN2-5 (ON) 10-B 7 PS44 I/O check, sensor check PHRYB CN2-8 (ON) 11-B 8 M15 operation check PHRYB CN12-1 to 2 9-B 9 Replace drum unit 10 Replace M15 11 PHRYB ICP1 conduction check 12 Replace PHRYB 13 Replace PRCB

• 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: • Transfer belt unit • 1st transfer pressure sensor/K (PS51) • 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: C2163
• 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.
• Causes: • Drum unit • High voltage unit/1 (HV1) • Printer control board (PRCB)
• Remedy: 1 Check the drum 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 the drum unit 5 Replace HV1 6 Replace PRCB

• Code: C2204
• Description: Waste toner transport motor’s failure to turn. The 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-PHRYB CN12 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-PRCB CN502 for proper connection and correct as necessary. 6 PS23 I/O check, sensor check PRCB CN502-6 (ON) 17-C 7 M20 operation check PHRYB CN12-3 to 6 9-B 8 Replace M20 9 PHRYB ICP1 conduction check 10 Replace PHRYB 11 PRCB ICP15 conduction check 12 Replace PRCB

• Code: C2257
• Description: Cleaning brush motor's failure to turn The motor lock signal remains HIGH for a predetermined continuous period of time while the motor is turning.
• Causes: • Transfer belt unit (cleaner unit) • Cleaning brush motor (M38) • Printer control board (PRCB)
• Remedy: 1 Check the connector between M38-PRCB CN39 for proper connection and correct as necessary. 2 Check the M38 connector for proper drive coupling and correct as necessary. 3 Check the cleaner unit gear of the transfer belt unit for rotation and correct any faulty rotation. 4 M38 operation check PRCB CN39-1 to 7 20-K 5 Replace M38 6 Replace the transfer belt unit. 7 PRCB ICP8 conduction check 8 Replace PRCB