Code :

Code: H7-12
Description: Fusing low temperature recovery trouble (TH_US)
Causes: The fusing temperature does not reach the specified level within the specified time from stopping a job due to fall in the fusing temperature. Thermistor trouble. Heater lamp trouble. PCU PWB trouble Thermostat trouble. Connector, harness connection trouble. Power unit trouble. Interlock switch 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 power unit. Replace the interlock switch. Use SIM5-2 to check the flashing operation of the heater lamp.

Code: H7-14
Description: Low temperature trouble (TH_EX) in reset operation after JOB stop due to a fall in the fusing temperature during a JOB.
Causes: The specified temperature is not reached within the specified time in reset operation of the fusing temperature. Thermistor trouble. Heater lamp trouble. PCU PWB trouble. Thermostat trouble. Connector, harness connection trouble. Power unit trouble.
Remedy: Use SIM5-2 to check the operation of the heater lamp. Replace the thermistor. Replace the PCU PWB. Check connection of the connector and the harness. Replace the heater lamp. Replace the power unit. Use SIM14 to cancel the trouble.

Code: H8-00
Description: Fusing unit initial detection trouble
Causes: The initial detection fuse is not blown off though it is conducted for the specified time. Fusing unit trouble. PCU PWB trouble. Connection trouble of the connector and the harness.
Remedy: Use SIM6-51 to check the operations of the [FUCRU] fuse blowing circuit. Use SIM30-1 to check the [FUCRU] initial detection input signal. Replace the fusing unit. Replace the PCU PWB. Check connection of the connector and the harness.

Code: L1-00
Description: Scanner feed trouble
Causes: Scanner feed is not completed within the specified time. 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
Causes: Scanner return is not completed within the specified time. 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
Causes: The lock signal is not detected within 1 sec when turning ON the paper feed motor when warming up, canceling a jam. Paper feed motor trouble. 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 connectors and the harness. Replace the PCU PWB.

Code: L4-03
Description: Fusing motor lock trouble
Causes: The motor lock signal is detected during rotation of the fusing motor. Fusing motor trouble. PCU PWB trouble. Connection trouble of the connector and the harness.
Remedy: Use Sim6-1 to check the operation of the fusing motor. Replace the fusing motor. Replace the PCU PWB. Check connection of the connector and the harness.

Code: L4-04
Description: Developing motor trouble
Causes: The motor lock signal is detected during rotation of the developing motor. Developing motor trouble. 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 connectors and the harness. Replace the PCU PWB. Replace the developing motor. Replace the developing unit.