Code :

Code: L4-29
Description: HDD cooling fan motor trouble. The motor lock signal is detected during rotation of the HDD fan motor.
Causes: Fan motor trouble. Harness connection trouble between the controller PWB and the fan motor. Control circuit trouble.
Remedy: Use Sim. 6-2 to check the operation of the fan motor. Check the harness and the connector between the controller PWB and the fan motor.

Code: L4-30
Description: Controller fan motor trouble. The motor lock signal is detected during rotation of the controller fan motor. The motor lock signal is detected during rotation of the HDD fan motor.
Causes: Fan motor trouble. Harness connection trouble between the controller. PWB and the fan motor. Control circuit trouble.
Remedy: Check the fan motor operation with Sim. 6-2. Check connection of the harness and the connector between the controller PWB and the fan motor.

Code: L4-31
Description: Machine heat exhaust fan 1 trouble. The lock signal is detected during operation of the machine heat exhaust fan.
Causes: Harness connection trouble between the PCU PWB and the fan motor. PCU PWB trouble. Fan motor trouble. The fan is not rotating due to other trouble. (Power is not supplied to the fan motor.)
Remedy: Use Sim. 6-2 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: L4-32
Description: Power cooling fan 1 / 2 trouble. The lock signal is detected during operation of the power cooling fan
Causes: Harness connection trouble between the PCU PWB and the fan motor. PCU PWB trouble. Fan motor trouble. The fan is not rotating due to other trouble. (Power is not supplied to the fan motor.)
Remedy: Use Sim. 6-2 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: L4-34
Description: Polygon cooling fan trouble. The lock signal is detected during the operation of the polygon cooling fan.
Causes: Harness connection trouble between the PCU PWB and the fan motor. PCU PWB trouble. Fan motor trouble. The fan is not rotating due to other trouble. (Power is not supplied to the fan motor.)
Remedy: Use Sim. 6-2 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: L4-36
Description: Toner suction fan trouble. The lock signal is detected during operation of the toner suction fan.
Causes: Harness connection trouble between the PCU PWB and the fan motor. PCU PWB trouble. Fan motor trouble. The fan is not rotating due to other trouble. (Power is not supplied to the fan motor.)
Remedy: Use Sim. 6-2 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: L4-38
Description: Reverse transport cooling fan trouble. The lock signal is detected during operation of the reverse transport cooling fan.
Causes: Harness connection trouble between the PCU PWB and the fan motor. PCU PWB trouble. Fan motor trouble. The fan is not rotating due to other trouble. (Power is not supplied to the fan motor.)
Remedy: Use Sim. 6-2 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: L4-39
Description: Reverse cooling fan trouble. The lock signal is detected during operation of the reverse cooling fan
Causes: Harness connection trouble between the PCU PWB and the fan motor. PCU PWB trouble. Fan motor trouble. The fan is not rotating due to other trouble. (Power is not supplied to the fan motor.)
Remedy: Use Sim. 6-2 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.