Code :

Code: H7-14
Description: Low temperature detection during the temperature control reset operation after stopping the alarm in a JOB (HL_EX1)
Causes: When the alarm is stopped, the set temperature is not reached within the specified time. * Alarm stop: When the fusing temperature falls below the specified level in a print JOB, printing is interrupted temporarily and the temperature is reset.
Remedy: Case 1 Cause Connector and harness connection trouble Check and remedy Check connection of the connector and the harness. Case 2 Cause Thermistor trouble, thermostat trouble, heater lamp trouble, PCU PWB trouble, AC power source trouble, interlock switch trouble Check and remedy Use SIM 5-2 to check lighting of the heater lamp. Check conduction of the thermostat. Replace the heater lamp, the PCU PWB, and the AC PWB.

Code: L4-02
Description: Paper feed motor lock trouble
Causes: Paper feed motor trouble, harness connection trouble between PCU PWB and paper feed motor, control circuit trouble
Remedy: Use SIM6-1 to check the paper feed motor operation. Check the harness and the connector between the PCU PWB and the paper feed motor.

Code: L4-03
Description: Fusing motor lock trouble
Causes: The motor lock signal is detected during rotation of the fusing motor.
Remedy: Case 1 Cause Harness connection trouble between the PCU PWB and the fusing motor. Check and remedy Check the harness and the connector between the PCU PWB and the fusing motor. Case 2 Cause Fusing motor trouble, control circuit trouble Check and remedy Use SIM6-1 to check the operation of the fusing motor.

Code: L4-04
Description: Developing motor trouble (BK)
Causes: The motor lock signal is detected during rotation of the developing motor.
Remedy: Case 1 Cause Harness connection trouble between the PCU PWB and the developing motor. Check and remedy Check the harness and the connector between the PCU PWB and the developing motor. Case 2 Cause Developing motor trouble, control circuit trouble Check and remedy Use SIM25-1 to check the operation of the developing motor.

Code: L4-05
Description: Developing motor trouble (CL)
Causes: The motor lock signal is detected during rotation of the developing motor.
Remedy: Case 1 Cause Harness connection trouble between the PCU PWB and the developing motor. Check and remedy Check the harness and the connector between the PCU PWB and the developing motor. Case 2 Cause Developing motor trouble, control circuit trouble Check and remedy Use SIM25-1 to check the operation of the developing motor.

Code: L4-06
Description: Transfer belt separation position sensor trouble
Causes: When separating the primary transfer belt unit, change in the separation position sensor characteristics is not detected within the specified time.
Remedy: Case 1 Cause Harness connection trouble between the PCU PWB and the separation position sensor Check and remedy Check the harness between the PCU PWB and the separation position sensor. Case 2 Cause The belt position sensor is not interrupted or it is always interrupted. Belt separation clutch operation trouble Check and remedy Use SIM6-3 to check the belt separation operation. Check to insure that the sensor is interrupted from lighting when the belt is separated. Case 3 Cause The primary transfer belt unit is not installed. Check and remedy Install the primary transfer belt unit.