Description: After the heat unit was heated normally, the center thermistor of the fuser unit detected a temperature lower than the specified value.
Remedy: <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset. 1 Connection failure of the center or side thermistor harness of the fuser unit Reconnect the center or side thermistor harness of the fuser unit. 2 Connection failure of the fuser unit heater harness Reconnect the fuser unit heater harness. 3 Connection failure of the eject sensor harness Reconnect the eject sensor harness. 4 Connection failure of the lowvoltage power supply harness Reconnect the low-voltage power supply harness. 5 Eject sensor PCB failure Replace the eject sensor PCB. 6 Fuser unit failure Replace the fuser unit. 7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB. 8 Main PCB failure Replace the main PCB.
Code: 0505
Description: The center thermistor of the fuser unit detected a temperature rise greater than the specified value within the specified time.
Remedy: <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset. 1 Connection failure of the center or side thermistor harness of the fuser unit Reconnect the center or side thermistor harness of the fuser unit. 2 Connection failure of the fuser unit heater harness Reconnect the fuser unit heater harness. 3 Connection failure of the eject sensor harness Reconnect the eject sensor harness. 4 Connection failure of the lowvoltage power supply harness Reconnect the low-voltage power supply harness. 5 Eject sensor PCB failure Replace the eject sensor PCB. 6 Fuser unit failure Replace the fuser unit. 7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB. 8 Main PCB failure Replace the main PCB.
Code: 0506
Description: The center thermistor of the fuser unit detected a temperature fall greater than the specified value within the specified time.
Remedy: <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset. 1 Connection failure of the center or side thermistor harness of the fuser unit Reconnect the center or side thermistor harness of the fuser unit. 2 Connection failure of the fuser unit heater harness Reconnect the fuser unit heater harness. 3 Connection failure of the eject sensor harness Reconnect the eject sensor harness. 4 Connection failure of the lowvoltage power supply harness Reconnect the low-voltage power supply harness. 5 Eject sensor PCB failure Replace the eject sensor PCB. 6 Fuser unit failure Replace the fuser unit. 7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB. 8 Main PCB failure Replace the main PCB.
Code: 050A
Description: The hardware detected a temperature error through the center thermistor or the side thermistor of the fuser unit.
Remedy: <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset. 1 Connection failure of the center or side thermistor harness of the fuser unit Reconnect the center or side thermistor harness of the fuser unit. 2 Connection failure of the fuser unit heater harness Reconnect the fuser unit heater harness. 3 Connection failure of the eject sensor harness Reconnect the eject sensor harness. 4 Connection failure of the lowvoltage power supply harness Reconnect the low-voltage power supply harness. 5 Eject sensor PCB failure Replace the eject sensor PCB. 6 Fuser unit failure Replace the fuser unit. 7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB. 8 Main PCB failure Replace the main PCB.
Code: 050B
Description: When the center thermistor of the fuser unit was lower than the idle temperature, the side thermistor detected a temperature higher than the specified temperature.
Remedy: <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset. 1 Connection failure of the center or side thermistor harness of the fuser unit Reconnect the center or side thermistor harness of the fuser unit. 2 Connection failure of the fuser unit heater harness Reconnect the fuser unit heater harness. 3 Connection failure of the eject sensor harness Reconnect the eject sensor harness. 4 Connection failure of the lowvoltage power supply harness Reconnect the low-voltage power supply harness. 5 Eject sensor PCB failure Replace the eject sensor PCB. 6 Fuser unit failure Replace the fuser unit. 7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB. 8 Main PCB failure Replace the main PCB.
Code: 050C
Description: When the center thermistor of the fuser unit was higher than the idle temperature, the side thermistor detected a temperature lower than the specified temperature.
Remedy: <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset. 1 Connection failure of the center or side thermistor harness of the fuser unit Reconnect the center or side thermistor harness of the fuser unit. 2 Connection failure of the fuser unit heater harness Reconnect the fuser unit heater harness. 3 Connection failure of the eject sensor harness Reconnect the eject sensor harness. 4 Connection failure of the lowvoltage power supply harness Reconnect the low-voltage power supply harness. 5 Eject sensor PCB failure Replace the eject sensor PCB. 6 Fuser unit failure Replace the fuser unit. 7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB. 8 Main PCB failure Replace the main PCB.