Description: Scanner return is not completed within the specified time.Recovery error from low fuser temp. (TH_LM) The fusing temperature does not reach the specified level within the specified time from stopping a job due to fall in the fusing temperature.
Causes: Thermistor trouble. Heater lamp trouble. PCU PWB trouble. Thermostat trouble. Connector, harness connection trouble. HL control PWB trouble. Power unit trouble.
Remedy: Replace the thermistor. Replace the heater lamp. Replace the PCU PWB. Replace the thermostat. Check connection of the connector and the harness. Replace the HL control PWB. Replace the power unit. Use SIM5-2 to check the flashing operation of the heater lamp.
Code: L1-00
Description: Scanner feed trouble Scanner feed is not completed within the specified time.
Causes: Scanner unit trouble. SCU PWB trouble. Scanner control PWB trouble. Harness and connector connection trouble. Scanner home position sensor trouble. Scanner motor trouble.
Remedy: Use SIM1-1 to check the scan operation. Replace the scanner unit. Replace the SCU PWB. Check connection of the connectors and the harness. Replace the scanner home position sensor. Replace the scanner motor.
Code: L3-00
Description: Scanner return trouble Scanner return is not completed within the specified time.
Causes: Scanner unit trouble SCU PWB trouble Scanner control PWB trouble Harness and connector connection trouble Scanner home position sensor trouble Scanner motor trouble
Remedy: Use SIM1-1 to check the scan operation. Replace the scanner unit. Replace the SCU PWB. Check connection of the connectors and the harness. Replace the scanner home position sensor. Replace the scanner motor.
Code: L4-02
Description: Paper feed motor trouble A lock signal is not detected within the specified time in ON operation of the paper feed motor after warming-up or canceling a jam.
Causes: Paper feed motor trouble Paper feed motor harness and connector connection trouble PCU PWB trouble
Remedy: Use SIM6-1 to check the operation of the paper feed motor. Replace the paper feed motor. Check connection of the paper feed motor harness and the connector. Replace the PCU PWB.
Code: L4-03
Description: Fusing motor trouble The motor lock signal is detected during rotation of the fusing motor
Causes: Fusing motor trouble Fusing motor harness and connector connection trouble PCU PWB trouble
Remedy: Use SIM6-1 to check the operation of the fusing motor. Replace the Fusing motor. Check connection of the fusing motor harness and the connection. Replace the PCU PWB.
Code: L4-04
Description: Developing motor trouble (BLACK) The motor lock signal is detected during rotation of the developing motor.
Causes: Developing motor trouble Developing motor harness and connector connection trouble PCU PWB trouble Developing unit trouble
Remedy: Use SIM25-1 to check the operation of the developing motor. Replace the developing motor. Check connection of the developing motor harness and the connection. Replace the PCU PWB. Replace the developing motor. Replace the developing unit.