Code :

Code: L4-16
Description: Fusing pressure release trouble
Causes: Fusing pressure release sensor trouble. Fusing pressure release motor trouble. Pressure release drive gear and pressure release idle gear trouble. PCU PWB trouble. Connection trouble of the connector and the harness.
Remedy: Replace the fusing pressure release sensor. Replace the fusing pressure release motor. Replace the pressure release drive gear and the pressure release idle gear. Replace the PCU PWB. Check connection of the connector and the harness.

Code: L4-17
Description: Drum motor trouble (BK)
Causes: Drum motor trouble Connection trouble of the connector and the harness between the PCU PWB and the drum motor. PCU PWB trouble
Remedy: Check the operation of the drum motor by SIM25-01. Check the connection of the harness and the connector between the PCU PWB and the drum motor. Replace the PCU PWB and the drum motor.

Code: L4-18
Description: Drum motor trouble (C)
Causes: Drum motor trouble Connection trouble of the connector and the harness between the PCU PWB and the drum motor. PCU PWB trouble
Remedy: Check the operation of the drum motor by SIM25-01. Check the connection of the harness and the connector between the PCU PWB and the drum motor. Replace the PCU PWB and the drum motor

Code: L4-19
Description: Drum motor trouble (M)
Causes: Drum motor trouble Connection trouble of the connector and the harness between the PCU PWB and the drum motor. PCU PWB trouble
Remedy: Check the operation of the drum motor by SIM25-01. Check the connection of the harness and the connector between the PCU PWB and the drum motor. Replace the PCU PWB and the drum motor.

Code: L4-20
Description: Drum motor trouble (Y)
Causes: Drum motor trouble Connection trouble of the connector and the harness between the PCU PWB and the drum motor. PCU PWB trouble
Remedy: Check the operation of the drum motor by SIM25-01. Check the connection of the harness and the connector between the PCU PWB and the drum motor. Replace the PCU PWB and the drum motor.

Code: L4-32
Description: Power source cooling fan trouble
Causes: Power cooling fan trouble. PCU PWB trouble. Connection trouble of the connector and the harness.
Remedy: Use SIM6-2 to check that the fan is actually rotating. Replace the power cooling fan. Replace the PCU PWB. Check connection of the connectors and the harness.

Code: L4-35
Description: Fusing cooling fan R trouble
Causes: Fusing cooling fan trouble. PCU PWB trouble. Connection trouble of the connector and the harness.
Remedy: Use SIM6-2 to check that the fan is actually rotating. Replace the fusing cooling fan. Replace the PCU PWB. Check connection of the connector and the harness.

Code: L4-43
Description: Paper exit cooling fan R trouble
Causes: Fan trouble. PCU PWB trouble. Connection trouble of the connector and the harness.
Remedy: Check that the fan is rotating after turning ON the power. Replace the fan. Replace the PCU PWB. Check the connector and the harness. Use SIM6-2 to check that the fan is actually rotating.