• Code: A0-21
• Description: Machine level error (PCU detection)
• Causes: Inconsistency between the PCU firmware version and the EEPROM data version.
• Remedy: Check the combination of the firmware.

• Code: A0-22
• Description: Conflict firmware and EEPROM data version (SCN-MFP)
• Causes: Inconsistency between the SCN-MFP PWB firmware version and the EEPROM data version.
• Remedy: Check the combination of the firmware.

• Code: C1-10
• Description: Main charger trouble (Monochrome)
• Causes: Open circuit or short circuit of the main charger (Black) output
• Remedy: 1) Check & Remedy Use SIM8-2 to check the output of [GB-K]. If the leakage noise or the flickering on the screen of the panel is detected; (1) Abnormality of the charger (BK) -> Remove and insert the charger (BK) or replace the charger (BK). (2) Imperfect insertion of the charger (BK) -> Remove and insert the charger (BK). (3) Abnormality of MC-K harness (Transformer B801 of the high-voltage MC PWB) -> Remove and insert MC-K harness or replace MCK harness. (4)Abnormality of GB-K/DV-KCMY wiring -> Check GB-K/DV-KCMY wiring./Replace. (5) Abnormality of the developing unit (K/C/M/Y) -> Insert and remove the developing unit./Replace. (6) Abnormality of the high voltage MC PWB spring contact (GB,DV). -> Check the high voltage MC PWB spring contact. 2) Check & Remedy Use SIM8-2 to check the output of [GB-K]. If the leakage noise etc. is not detected; (1) Charger (BK) not inserted. -> Insert the Charger (BK). (2) Disconnection/ breakage of MC-K harness (Transformer B801 of the high-voltage MC PWB) -> Insert the harness./Replace. (3) High MC PWB trouble. -> Replace the high MC PWB. (4) PCU PWB trouble -> Replace PCU PWB.

• Code: C1-14
• Description: Main charger trouble (Color)
• Causes: Open circuit or short circuit of the main charger (Color) output
• Remedy: 1) Check & Remedy Use SIM8-2 to check the output of [GB-C/M/Y]. If the leakage noise or the flickering on the screen of the panel is detected; (1) Abnormality of the charger (C/M/Y) -> Remove and insert the charger (C/M/Y) or replace the charger (C/M/Y). (2) Imperfect insertion of the charger (C/M/Y) -> Remove and insert the charger (C/M/Y). (3) Abnormality of MC-CL harness (Transformer B901 of the high-voltage MC PWB) -> Remove and insert MC-CL harness or replace MCCL harness. (4)Abnormality of GB-CMY wiring -> Check GB-CMY wiring./Replace. (5)Abnormality of the high voltage MC PWB spring contact (GB,DV) -> Check the high voltage MC PWB spring contact. 2) Check & Remedy Use SIM8-2 to check the output of [GB-C/M/Y]. If the leakage noise etc. is not detected; (1) Charger (C/M/Y) not inserted. -> Insert the Charger (C/M/Y). (2) Disconnection/ breakage of MC-CL harness (Transformer B901 of the high-voltage MC PWB) -> Insert the harness./Replace. (3) High MC PWB trouble. -> Replace the high MC PWB. (4) PCU PWB trouble -> Replace PCU PWB.

• Code: C1-15
• Description: High-voltage MC Black circuit trouble
• Causes: 1) Pin getting away of a harness (MC-K-ERR) and breaking (MC PWB Input connector CN1-10pin) 2) High-voltage error circuit (MC-K-ERR) damage
• Remedy: 1) Check connection of the harness.(MC PWB Input connector CN1-10pin) Replace the harness. 2) Check disconnection of the high voltage MC PWB connector./Replace.

• Code: C1-16
• Description: High-voltage MC color circuit trouble
• Causes: 1) Pin getting away of a harness (MC-CMY-ERR) and breaking (MC PWB Input connector CN1-11pin) 2) High-voltage error circuit (MC-CMYERR) damage
• Remedy: 1) Check connection of the harness.(MC PWB Input connector CN1-11pin) Replace the harness. 2) Check disconnection of the high voltage MC PWB connector./Replace.

• Code: C1-40
• Description: High-voltage MC PWB trouble
• Causes: 1) Input harness disconnection in the high voltage MC PWB. 2) Harness (MC-K-ERR, MC-CMY-ERR) pin disconnection (MC PWB input connector CN1- 10pin,CN1-11pin) 3) 24V fuse meltdown in the high voltage MC PWB 4) High voltage error circuit (MC-K-ERR, MC-CMYERR) breakage in the high voltage MC PWB
• Remedy: 1) Check the harness and the connector (MC PWB Input connector CN1) 2) Check or replace the harness.(MC PWB input connector CN1-10pin, CN1-11pin) 3) 4) Replace the MC PWB

• Code: C1-41
• Description: High-voltage MC/TC PWB trouble
• Causes: 1) PCU connector (input harness to the high voltage MC PWB and the TC PWB) disconnection. (PCU PWB input CN10) 2) Both input connectors disconnections of the high voltage MC PWB and the high voltage TC PWB.(MC PWB input connector CN1,TC PWB input connector CN1) 3) 24V fuses meltdown in the high voltage MC PWB and the high voltage TC PWB
• Remedy: 1) Check the connections of the connectors to the high voltage MC PWB and the high voltage TC PWB on the PCU PWB or connect these connectors again (PCU PWB input CN10). 2) Check the connectors of the high voltage MC PWB and the high voltage TC PWB and connect these connectors again.(MC PWB input connector CN1,TC PWB input connector CN1) 3) Check or replace the high voltage MC PWB and the high voltage TC PWB