Description: Heat roller high temperature detection (MAIN). The fusing temperature exceeds 245C°.
Causes: Thermistor abnormality Control PWB abnormality Fusing section connector disconnection.
Remedy: Use SIM 5-02 to check the heater lamp blinking operation. When the lamp blinks normally. Check the thermistor and its harness. Check the thermistor input circuit on the control PWB. When the lamp keeps ON. Check the power PWB and the lamp control circuit on the MCU PWB. Cancel the trouble with SIM 14.
Code: H3 01
Description: Heat roller high temperature detection (SUB). The fusing temperature exceeds 245°C.
Causes: Sub thermistor abnormality Heater lamp abnormality Thermostat abnormality Main PWB abnormality
Remedy: Use SIM 5-02 to check the heater lamp blinking operation. When normally lighting. Check the sub thermistor and its harness. Check the sub thermistor input circuit on the MAIN PWB. When not normally lighting. Check the lamp control circuit on the MCU PWB. Cancel the trouble with SIM 14.
Code: H4 00
Description: Heat roller low temperature detection. When the fusing temperature is 150C° or less in 55 sec from starting warming-up. When the warm-up complete temperature is not reached in 30 sec from reaching 150C°. When the fusing temperature is less than 100C° in 20 sec from the ready state. When the fusing temperature is less than 80C° for more than 300ms in the ready state or in printing. When the fusing temperature is less than 80C° for more than 300ms in the standby mode at a low temperature.
Remedy: Use SIM 5-02 to check the heater lamp blinking operation. When the lamp blinks normally. Check the thermistor and its harness. Check the thermistor input circuit on the control PWB. When the lamp does not light up. Check for disconnection of the heater lamp and the thermostat. Check the interlock switch. Check the power PWB and the lamp control circuit on the MCU PWB. Cancel the trouble with SIM 14.
Code: H5 01
Description: 5 continuous POUT not-reached error. When 5 continuous not-reached jams to the paper exit sensor (POUT) occur. The jam counter is backed up and it is used in a job after turning on the power.
Causes: Jam paper is not removed from the fusing unit. (Jam paper remains.) Paper exit sensor breakdown or harness connection trouble Fusing unit installation trouble
Remedy: Check for jam paper remaining in the fusing unit. (winding, etc.) Check the POUT sensor harness, and check installation of the fusing unit. Use SIM14 to clear the self diag display.
Code: L1 00
Description: Scanner feed trouble. Though the specified steps of motor pulses are outputted, the mirror home position sensor remains ON.
Causes: Mirror unit abnormality The scanner wire is disconnected. The origin detection sensor abnormality Mirror motor harness abnormality
Remedy: Use SIM 1-1 to check the mirror reciprocating operations. When the mirror does not feed. Check for disconnection of the scanner wire. Check the harness and the connector between the mirror motor and the MCU PWB. Replace the mirror unit. Replace the MCU PWB. When the mirror does feed. Use SIM 1-2 to check the mirror home position sensor.
Code: L3 00
Description: Scanner return trouble. Though the specified steps of motor pulses are outputted, the mirror home position sensor does not turn ON.
Causes: Mirror unit abnormality Scanner wire disconnection Origin detection sensor abnormality Mirror motor harness abnormality
Remedy: Use SIM 1-1 to check the mirror reciprocating operations. When the mirror does not return. Check for disconnection of the scanner wire. Check the harness and the connector between the mirror motor and the MCU PWB. Replace the mirror unit. Replace the MCU PWB. When the mirror does feed. Use SIM 1-2 to check the mirror home position sensor.