• Code: EE EL
• Description: Developer adjustment trouble (Over-toner abnormality). An abnormality occurred in execution of automatic developer adjustment. Sample data over-toner was detected.
• Causes: Toner concentration sensor abnormality Toner concentration trouble Developing unit trouble MCU PWB failure
• Remedy: Use SIM 25-2 to perform the auto developer adjustment.

• Code: EE EU
• Description: Developer adjustment trouble (Undertoner abnormality). An abnormality occurred in execution of automatic developer adjustment. Sample data under-toner was detected.
• Causes: Toner concentration sensor abnormality Toner concentration trouble Developing unit trouble MCU PWB failure
• Remedy: Use SIM 25-2 to perform the auto developer adjustment.

• Code: F1 00
• Description: Finisher communication trouble. Communication line test error occurs when power is turned on or after the exit of a simulation mode. Error in Finisher communication
• Causes: Connection trouble or disconnection of the connector and harness between the body and the finisher. Finisher control PWB trouble Control PWB failure Malfunction by noises
• Remedy: Turn off/of the power to cancel the trouble. Check connector/harness of communication line Replace the finisher control PWB.

• Code: F1 01
• Description: Side guide plated home position error. The side guide plate cannot return to the home position.
• Causes: Side guide plate drive motor abnormality Side guide plate home position sensor abnormality
• Remedy: Use SIM3-3-1 to check the side guide plate motor operation.

• Code: F1 06
• Description: Offset motor trouble. When the offset motor of the finisher is driven it does not reach the specified position.
• Causes: Offset motor abnormality Offset motor origin sensor abnormality Finisher PWB abnormality
• Remedy: Use SIM 3-3-6 to check the offset motor operation.

• Code: F1 08
• Description: Staple motor error. The staple motor cannot return to the home position.
• Causes: Staple motor abnormality Staple motor home position sensor abnormality Staple unit abnormality
• Remedy: Use SIM 3-3-7 to check the staple motor operation.

• Code: F1 11
• Description: Rear edge plate home position error. The rear edge plate cannot return to the home position.
• Causes: Rear edge plate drive motor abnormality Side guide plate home position sensor abnormality Finisher PWB abnormality
• Remedy: Use SIM 3-3-2 to check the rear edge plate motor operation.

• Code: F1 15
• Description: Finisher lift-up motor trouble. The finisher lift-up motor does not reach the specified position.
• Causes: Lift-up motor abnormality Lift-up motor upper limit sensor abnormality Finisher PWB abnormality
• Remedy: Use SIM 3-3-5 to check the lift-up motor operation.