Code :

Code: L4-40
Description: Ozone fan motor 1 trouble
Causes: Harness/connector trouble between the PCU PWB and the fan motor. PCU PWB trouble. Fan motor trouble. The fan does not rotate because of the other trouble. (No power supply to the fan motor)
Remedy: Use SIM6-2 to check the operation of the fan motor. Check the harness and the connector between the PCU PWB and the fan motor. Replace the PCU PWB. Replace the fan motor.

Code: L4-43
Description: Paper exit cooling fan motor 6 trouble
Causes: The fan does not rotate because of disconnection of the fan connector or other trouble.
Remedy: Check the harness and the connector between the PCU PWB and the fan. Use SIM6-2 to check that the fan is actually rotating.

Code: L4-44
Description: Power source cooling fan motor 2 trouble
Causes: Harness/connector trouble between the PCU PWB and the fan motor. PCU PWB trouble. Fan motor trouble. The fan does not rotate because of the other trouble. (No power supply to the fan motor)
Remedy: Use SIM6-2 to check the operation of the fan motor. Check the harness and the connector between the PCU PWB and the fan motor. Replace the PCU PWB. Replace the fan motor.

Code: L4-46
Description: DV cooling fan motor 1 trouble
Causes: The fan operation signal is not detected within the specified time in the developing section cooling fan operation. Developing section cooling fan trouble. PCU PWB trouble. Connection trouble of the connector and the harness.
Remedy: Check connection of the connector and the harness. Use SIM6-2 to check the operation of the fan motor. Replace the developing section cooling fan. Replace the PCU PWB.

Code: L4-50
Description: Process fan motor 1 trouble
Causes: The fan operation signal is not detected within the specified time in the process cooling fan operation. Process cooling fan trouble. PCU PWB trouble. Connection trouble of the connector and the harness.
Remedy: Check connection of the connector and the harness. Use SIM6-2 to check the operation of the fan motor. Replace the process cooling fan. Replace the PCU PWB.

Code: L4-56
Description: Paper exit cooling fan motor 1 trouble
Causes: The fan does not rotate because of disconnection of the fan connector or other trouble.
Remedy: Check the harness and the connector between the PCU PWB and the fan. Use SIM6-2 to check that the fan is actually rotating.

Code: L4-58
Description: Fuser cooling fan motor 2 trouble
Causes: The fan does not rotate because of disconnection of the fan connector or other trouble.
Remedy: Check the harness and the connector between the PCU PWB and the fan. Use SIM6-2 to check that the fan is actually rotating.

Code: L4-64
Description: DV cooling fan motor 2 trouble
Causes: The fan operation signal is not detected within the specified time in the developing section cooling fan operation. Developing section cooling fan trouble. PCU PWB trouble. Connection trouble of the connector and the harness.
Remedy: Check connection of the connector and the harness. Use SIM6-2 to check the operation of the fan motor. Replace the developing section cooling fan. Replace the PCU PWB.