• 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 T102, T201, T202 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 T102, T201, T202 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: C1-40
• Description: High voltage MC PWB trouble
• Causes: 1) Input harness disconnection in the high voltage MC PWB CN1 2) Harness (MC-K-ERR, MC-CMY-ERR) pin disconnection (connector CN1-1,8,9,10pin) 3) 24V fuse meltdown 4) High voltage error circuit (MC-K-ERR, MC-CMYERR) breakage
• Remedy: 1) Check the harness and connector CN1 2) Check or replace the harness MC PWB input connector CN1-1,8,9,10pin 3) 4)Replace the MC PWB

• Code: C4-00
• Description: PTC trouble
• Causes: (1) Abnormality of PTC unit (2) Imperfection insertion of PTC unit (3) PTC unit not inserted (4) Disconnection, abnormality of PTC unit. (Transformer T102 of the high-voltage 2TC PWB) (5) High voltage 2TC PWB trouble (6) PCU PWB trouble
• Remedy: (1)Remove and insert PTC unit./Replace. (2) Remove and insert PTC unit. (3) Insert PTC unit. (4) Insert PCT harness. /Replace. (Transformer T102 of the high-voltage 2TC PWB) (5) Replace the high voltage 2TC PWB. (6 Replace PCU PWB.

• Code: C4-01
• Description: PTC (Pre Transfer Charger) cleaner trouble. Shifting the charger cleaner is not completed within the specified time.
• Causes: Charger unit trouble HP sensor, motor, PCU PWB, harness connection trouble
• Remedy: Check the charger unit, the PCU PWB, and the harness connection.

• Code: C4-20
• Description: 1st transfer output open trouble
• Causes:
• Remedy: 1) Check & Remedy Use SIM8-6 to check the out put of [1TC-K/C/M/Y].If the leakage noise or the flickering on the screen of the panel is detected; (1) Abnormality of 1ST transfer unit. --> Remove and insert the 1ST transfer unit. --> Replace the 1ST transfer unit. (2) Imperfect insertion the 1ST transfer unit. --> Remove and insert the 1ST transfer unit. (3) Abnormality of the 1TC-K/C/M/Y harness (Transformer T101,T102,T201,T202 of the high voltage 1TC PWB). --> Check 1TC-K/C/M/Y harness wiring./Replace. (4) High voltage 1TC PWB trouble. --> Replace the High voltage 1TC PWB. (5) PCU PWB trouble. --> Replace the PCU PWB. 2) Check & Remedy Check the operation of the 1ST transfer separation clutch (1TURC, 1TURRC). If the clutch or gera do not move smoothly or have noise, (1) Abnormality of 1ST transfer separation clutch. --> Check connection of harness and check the clutch. --> Replace the clutch. (2) Abnormality of 1ST transfer unit. --> Check the 1ST transfer unit. --> Replace the 1ST transfer unit. 3) Check & Remedy Check the operation of OPC Drum. If it is not normal movement, (1) Abnormality of Drum drive motor (DM_K, DM_C, DM_M, DM_Y). --> Check Drum drive motor (DM_K, DM_C, DM_M, DM_Y). (2) Abnormality of OPC Drum (K/C/M/Y). --> Check OPC Drum (K/C/M/Y). --> Replace OPC Drum (K/C/M/Y).

• Code: C4-21
• Description: 1st transfer output short trouble
• Causes: 1) Abnormality of 1ST transfer unit. 2) Imperfect insertion the 1ST transfer unit. 3) High voltage 1TC PWB trouble.
• Remedy: Use SIM8-6 to check the out put of [1TC]. 1) Check the 1ST transfer unit. Replace the 1ST transfer unit. 2) Remove and insert the 1ST transfer unit. 3) Replace the high voltage 1TC PWB.

• Code: C4-25
• Description: High voltage 1TC PWB trouble
• Causes: 1) Input harness disconnection in the high voltage 1TC PWB CN1 2) Hrness(1TC-S-ERR, 1TC-O-ERR) pin disconnection (connector CN1-1,7,8pin) 3) 24V fuse meltdown 4) High voltage error circuit(1TC-S-ERR, 1TC-O-ERR) breakage 5) ConnectorCN23 disconnection on the PCU PWB
• Remedy: 1) Check the harness and connector CN1 2) Check or replace the harness input connector CN1- 1,7,8pin 3) 4)Replace high voltage 1TC PWB 5) Replace PCU PWB

• Code: C4-30
• Description: 2nd transfer output open trouble
• Causes: Open circuit of the 2nd transfer out put.
• Remedy: Use SIM8-6 to check the out put of [2TC]. If the leakage noise or the flickering on the screen of the panel is detected; (1) Abnormality of 1ST transfer unit. --> Remove and insert the 1ST transfer unit. --> Replace the 1ST transfer unit. (2) Imperfect insertion the 1ST transfer unit. --> Remove and insert the 1ST transfer unit. (3) Abnormality of 2nd transfer unit. --> Remove and insert the 2nd transfer unit. --> Replace the 2ST transfer unit. (4) Imperfect insertion the 2nd transfer unit. --> Remove and insert the 2nd transfer unit. (5) Abnormality of the 2nd TC harness. (Transformer T102 of the high-voltage 2TC PWB) --> Check 2nd TC harness wiring.Replace. (6) High voltage 2TC PWB trouble. --> Replace the high voltage 2TC PWB. (7) PCU PWB trouble. --> Replace the PCU PWB.