• Code: C950
• Description: Memory of the LGC board abnormality, ID abnormality
• Remedy: (1) Check if the connectors CN331 and CN 343 on the SYS board are completely inserted or not disconnected. (2) Check if the connector CN434 on the DRV board is completely inserted or not disconnected. (3) Check if the conductor pattern on each board is short circuited or open circuited. (4) Replace the NVRAM. (5) Replace the LGC board. (6) Replace the DRV board. (7) Replace the SYS board. (8) Ask a specialist for a repair (Abnormal ID).

• Code: C960
• Description: Connection error between the LGC board and the DRV board, ID abnormality
• Remedy: (1) Check if the connectors CN331 and CN343 on the LGC board are completely inserted or not disconnected. (2) Check if the connector CN434 on the DRV board is completely inserted or not disconnected. (3) Check if the harness connecting the DRV board (J434) and the LGC board (CN360) is open circuited. (4) Check if the harness connecting the LGC board (CN331) and the high-voltage transformer (J480) is open circuited. (5) Check if the conductor pattern on each board is short circuited or open circuited. (6) Replace the DRV board. (7) Replace the LGC board. (8) Ask a specialist for a repair (Abnormal ID).

• Code: C970
• Description: High-voltage transformer abnormality
• Remedy: (1) Is the main charger installed securely? (2) Check if the spring of high-voltage supply contact point is deformed. (3) Check if the charger wire is broken or the main charger grid is deformed. (4) Check if any foreign matter is on the charger wire or main charger grid.

• Code: C9E0
• Description: Connection error between the SLG board and the SYS board
• Remedy: (1) Check if the connector CN18 of the SLG board is completely inserted or not disconnected. (2) Check if the connector CN102 of the SYS board is completely inserted or not disconnected. (3) Check if the harness connecting the SLG board (CN18) and the SYS board (CN102) is open circuited. (4) Check if the conductor pattern on each board is short circuited or open circuited. (5) Replace the SLG board. (6) Replace the SYS board.

• Code: CA10
• Description: Polygonal motor abnormality
• Remedy: Is the polygonal motor rotating? ↓→ NO → 1) Check if the connector CN342 on the LGC board is disconnected. 2) Check if the harness is open circuited or the connector pin is disconnected. 3) Check if the conductor pattern on the LGC board is short circuited or open circuited. 4) Replace the laser optical unit. 5) Replace the LGC board. YES Is the printed image distorted? ↓→ YES → 1) Check if the connector CN342 on the LGC board is almost disconnected. 2) Check if the harness is almost open circuited or the connector pin is almost disconnected. 3) Check if the conductor pattern on the LGC board is short circuited or open circuited. 4) Check if the laser unit cooling fan is stopped. 5) Check if the suction area of laser unit cooling fan is plugged up. 6) Replace the laser optical unit. 7) Replace the LGC board. NO 1) Check if the conductor pattern on the LGC board is short circuited or open circuited. 2) Check if the units with high-voltage (developer unit, transfer belt unit and 2nd transfer roller unit) are securely grounded. 3) Check if the bias supply joints of the units with high-voltage are securely connected or they are not stained. 4) Check if the plate in paper transport system is securely grounded. 5) Check if the equipment is grounded. 6) Check if the laser unit cooling fan is stopped. 7) Check if the suction area of laser unit cooling fan is plugged up. 8) Replace the laser optical unit. 9) Replace the LGC board.

• Code: CA20
• Description: H-Sync detion error
• Remedy: Is the cable (flexible flat type) between the connector (CN345) on the LGC board and connector (CN201) on the LDR board open circuited, broken or disconnected? ↓→ YES → 1) Reconnect the cable. 2) Check if the connector on the LGC board hold the cable securely. 3) Replace the laser optical unit. NO 1) Check if the units with high-voltage (developer unit, transfer belt unit and 2nd transfer roller unit) are securely grounded. 2) Check if the bias supply joints of the units with high-voltage are securely connected or they are not stained. 3) Check if the plate in paper transport system is securely grounded. 4) Check if the equipment is grounded. 5) Check if the conductor pattern is short circuited or open circuited. 6) Replace the LGC board. 7) Replace the laser optical unit.

• Code: CB10
• Description: Entrance motor abnormality
• Remedy: MJ-1101 Is there any mechanical problem when the entrance roller is rotated? → →YES Fix the mechanism. NO Is the harness between the entrance motor (M1) and the finisher control PC board (CN7) disconnected or open circuited? l → →YES • Reconnect the connector securely. • Replace the harness. NO 1) Replace the entrance motor (M1). 2) Replace the finisher control PC board.

• Code: CB11
• Description: Buffer tray guide motor abnormality
• Remedy: MJ-1101 Is there any mechanical problem when the buffer tray guide is opened/closed while the buffer roller is lifted up? → →YES Fix the mechanism. NO Is the harness between the buffer tray guide motor (M3) and the finisher control PC board (CN18) disconnected or open circuited? l → →YES • Reconnect the connector securely. • Replace the harness. NO 1) Replace the buffer tray guide motor (M3). 2) Replace the finisher control PC board.