• Code: CA10
• Description: Polygonal motor abnormality: The polygonal motor is not rotating normally
• Remedy: Polygonal motor abnormality Is the polygonal motor rotating? (Perform the output check: 03-103) NO 1. Check if the relay connector CN207 (28-pin connector) is almost disconnected. 2. Check if the connector (CN329) on the LGC board is disconnected. 3. Check if the connector pins are disconnected or the harnesses are opencircuited. 4. Check if the conductor pattern on the LGC board is short-circuited or opencircuited. 5. Replace the LGC board. 6. Replace the laser optical unit. YES Is the printed image distorted or does an abnormal noise occur? YES 1. Check if the laser unit cooling fan (front) and the laser unit cooling fan (rear) have stopped. (Perform the output check: 03-437 for front side, 03-439 for rear side) 2. Check if the suction areas of the laser unit cooling fan (front) and the laser unit cooling fan (rear) are plugged up. 3. Check if the relay connector CN207 (28-pin connector) is almost disconnected. 4. Check if the connector (CN329) on the LGC board is almost disconnected. 5. Check if the harnesses are almost open circuited or the connector pins are almost disconnected. 6. Check if the conductor pattern on the LGC board is short circuited or open circuited. 7. Replace the laser optical unit. 8. Replace the LGC board. NO Does an image control related/process related service call or an image failure occur? NO 1. Check if the laser unit cooling fan (front) and the laser unit cooling fan (rear) have stopped. (Perform the output check: 03-437 for the front side, 03-439 for the rear side) 2. Check if the suction areas of the laser unit cooling fan (front) and the laser unit cooling fan (rear) are clogged up. 3. Check if the relay connector CN207 (28-pin connector) is almost disconnected. 4. Check if the connector (CN329) on the LGC board is almost disconnected. 5. Check if the harnesses are open-circuited or the connector pins are almost disconnected. 6. Check if the conductor pattern on the LGC board is short-circuited or opencircuited. 7. Replace the laser optical unit. 8. Replace the LGC board. YES Perform the troubleshooting procedures for when an image control related/process related service call or an image failure occurs. Replace the laser optical unit. Replace the LGC board.

• Code: CA20
• Description: H-Sync detection error: H-Sync signal detection PC board cannot detect laser beams.
• Remedy: Is the relay connector (CN212) disconnected or almost disconnected? (Are they locked with the latches?) Is the harness between the LGC board (CN356) and the SNS board open circuited, broken or disconnected? Is the cable between the LGC board (CN356) and the LDR board open circuited or broken? Are the connectors (CN321 and CN326) on the LGC board disconnected? | YES 1. Reconnect the harness and the cable. NO Has the contact terminal of the cable between the LGC board (CN326) and the LDR board come off? YES 1. Replace the laser optical unit. between the power supply unit and the LGC board. NO 1. Check if the conductor pattern on the LGC board is open-circuited or short-circuited. 2. Check if the equipment is grounded. 3. Replace the laser optical unit. 4. Replace the LGC board.

• Code: CA47
• Description: SNS board abnormality: The SNS board does not operate due to disconnection or the harness breaking.
• Remedy: (1) Is the relay connector CN212 (4-pin connector) disconnected or almost disconnected? (Are they locked with the latches?) (2) Is the harness between the LGC board (CN327) and the SNS board open circuited, broken or disconnected? (3) Check if the conductor pattern on the LGC board is short circuited or open circuited. (4) Replace the LGC board. (5) Replace the laser optical unit.

• Code: CB00
• Description: Finisher not connected: Communication error has occurred between the equipment and finisher. [MJ1103/1104]
• Remedy: MJ-1103/1104 1. Check if the MJ-1103/1104 is set as the specified finisher on the equipment. 2. Check if the harness connecting the converter PC board and the finisher controller PC board is disconnected or open circuited. 3. Check if the conductor pattern on the converter PC board is open circuited or short circuited. 4. Check if the conductor pattern on the finisher controller PC board is open circuited or short circuited. 5. Replace the converter PC board. 6. Replace the finisher control PC board.

• Code: CB01
• Description: Finisher communication error: Communication error has occurred between the equipment and finisher. [MJ-1103/1104]
• Remedy: MJ-1103/1104 1. Check if the MJ-1103/1104 is set as the specified finisher on the equipment. 2. Check if the harness connecting the converter PC board and the finisher controller PC board is disconnected or open circuited. 3. Check if the conductor pattern on the converter PC board is open circuited or short circuited. 4. Check if the conductor pattern on the finisher controller PC board is open circuited or short circuited. 5. Replace the converter PC board. 6. Replace the finisher control PC board.

• Code: CB10
• Description: Entrance motor abnormality: The entrance motor is not rotating normally. [MJ-1103/1104]
• Remedy: MJ-1103/1104 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: The buffer tray guide motor is not rotating or the buffer tray guide is not moving normally. [MJ-1103/1104]
• Remedy: MJ-1103/1104 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.

• Code: CB12
• Description: Buffer roller drive motor abnormality: The buffer roller drive motor is not rotating or the buffer roller is not moving normally. [MJ-1103/1104]
• Remedy: MJ-1103/1104 Is there any mechanical problem when the buffer roller is rotated? YES Fix the drive mechanism. NO Is the harness between the buffer roller drive motor (M6) 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 roller drive motor (M6). 2. Replace the finisher control PC board.