• Code: L4-75
• Description: Paper exit motor trouble
• Causes: PCU PWB trouble. Motor trouble Connection trouble of the connector and the harness between the PCU PWB and the motor.
• Remedy: Check the connector and the harness of the PCU PWB and the motor. Replace the PCU PWB, the motor and the harness.

• Code: L4-76
• Description: Reverse motor trouble
• Causes: PCU PWB trouble. Motor trouble Connection trouble of the connector and the harness between the PCU PWB and the motor.
• Remedy: Check the connector and the harness of the PCU PWB and the motor. Replace the PCU PWB, the motor and the harness.

• Code: L4-77
• Description: ADU motor upper trouble
• Causes: PCU PWB trouble. Motor trouble Connection trouble of the connector and the harness between the PCU PWB and the motor.
• Remedy: Check the connector and the harness of the PCU PWB and the motor. Replace the PCU PWB, the motor and the harness.

• Code: L4-78
• Description: ADU motor bottom trouble
• Causes: PCU PWB trouble. Motor trouble Connection trouble of the connector and the harness between the PCU PWB and the motor.
• Remedy: Check the connector and the harness of the PCU PWB and the motor. Replace the PCU PWB, the motor and the harness.

• Code: L4-79
• Description: PS front motor trouble
• Causes: PCU PWB trouble. Motor trouble Connection trouble of the connector and the harness between the PCU PWB and the motor.
• Remedy: Check the connector and the harness of the PCU PWB and the motor. Replace the PCU PWB, the motor and the harness.

• Code: L6-10
• Description: Polygon motor trouble
• Causes: Polygon motor trouble. LSU PWB trouble. Connection trouble of the connector and the harness.
• Remedy: Use SIM61-1 to check the operation of the polygon motor. Check connection of the connector and the harness. Replace the LSU.

• Code: L8-01
• Description: Full wave signal detection error
• Causes: PCU PWB trouble. Power unit trouble. Connection trouble of the connector and the harness.
• Remedy: Replace the PCU PWB. Replace the power unit. Check connection of the connector and the harness.

• Code: L8-02
• Description: Full wave signal error
• Causes: An abnormality in the full wave signal frequency is detected (The frequency is detected as 65Hz or above, or 45Hz or less) PCU PWB trouble. Power unit trouble. Connection trouble of the connector and the harness. Power frequency wave form abnormality
• Remedy: Replace the PCU PWB. Replace the power unit. Check connection of the connector and the harness. Check the power wave form.