Description: After the center thermistor of the fuser unit was normally heated, it detected a temperature lower than the specified value.
Remedy: <User Check> - Turn the power OFF and ON again after several seconds to check if the error code disappears. 1 Connection failure of the center or side thermistor harness of the fuser unit Check the harness connection of the center or side thermistor of the fuser unit and reconnect them. 2 Connection failure of the heater harness of the fuser unit Check the harness connection of the heater of the fuser unit and reconnect it. 3 Harness connection failure of the eject sensor PCB Check the harness connection of the eject sensor PCB and reconnect it. 4 Harness connection failure of the low-voltage power supply PCB Check the harness connection of the low-voltage power supply PCB and reconnect it. 5 Eject sensor PCB failure Replace the eject sensor PCB ASSY. 6 Fuser unit failure Replace the fuser unit. 7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 8 Main PCB failure Replace the main PCB ASSY.
Code: 0505
Display: Print Unable 05
Description: The center thermistor of the fuser unit detected a temperature rise greater than the specified value within a set period of time.
Remedy: <User Check> - Turn the power OFF and ON again after several seconds to check if the error code disappears. 1 Connection failure of the center or side thermistor harness of the fuser unit Check the harness connection of the center or side thermistor of the fuser unit and reconnect them. 2 Connection failure of the heater harness of the fuser unit Check the harness connection of the heater of the fuser unit and reconnect it. 3 Harness connection failure of the eject sensor PCB Check the harness connection of the eject sensor PCB and reconnect it. 4 Harness connection failure of the low-voltage power supply PCB Check the harness connection of the low-voltage power supply PCB and reconnect it. 5 Eject sensor PCB failure Replace the eject sensor PCB ASSY. 6 Fuser unit failure Replace the fuser unit. 7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 8 Main PCB failure Replace the main PCB ASSY.
Code: 0506
Display: Print Unable 05
Description: The center thermistor of the fuser unit detected a temperature fall greater than the specified value within a set period of time.
Remedy: <User Check> - Turn the power OFF and ON again after several seconds to check if the error code disappears. 1 Connection failure of the center or side thermistor harness of the fuser unit Check the harness connection of the center or side thermistor of the fuser unit and reconnect them. 2 Connection failure of the heater harness of the fuser unit Check the harness connection of the heater of the fuser unit and reconnect it. 3 Harness connection failure of the eject sensor PCB Check the harness connection of the eject sensor PCB and reconnect it. 4 Harness connection failure of the low-voltage power supply PCB Check the harness connection of the low-voltage power supply PCB and reconnect it. 5 Eject sensor PCB failure Replace the eject sensor PCB ASSY. 6 Fuser unit failure Replace the fuser unit. 7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 8 Main PCB failure Replace the main PCB ASSY.
Code: 050A
Display: Print Unable 05
Description: The center thermistor or side thermistor of the fuser unit detected some temperature error in the hardware.
Remedy: <User Check> - Turn the power OFF and ON again after several seconds to check if the error code disappears. 1 Connection failure of the center or side thermistor harness of the fuser unit Check the harness connection of the center or side thermistor of the fuser unit and reconnect them. 2 Connection failure of the heater harness of the fuser unit Check the harness connection of the heater of the fuser unit and reconnect it. 3 Harness connection failure of the eject sensor PCB Check the harness connection of the eject sensor PCB and reconnect it. 4 Harness connection failure of the low-voltage power supply PCB Check the harness connection of the low-voltage power supply PCB and reconnect it. 5 Eject sensor PCB failure Replace the eject sensor PCB ASSY. 6 Fuser unit failure Replace the fuser unit. 7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 8 Main PCB failure Replace the main PCB ASSY.
Code: 050B
Display: Print Unable 05
Description: When the temperature of the center thermistor of the fuser unit is lower than the idle temperature, the side thermistor of the fuser unit detected a temperature higher than the specified value.
Remedy: <User Check> - Turn the power OFF and ON again after several seconds to check if the error code disappears. 1 Connection failure of the center or side thermistor harness of the fuser unit Check the harness connection of the center or side thermistor of the fuser unit and reconnect them. 2 Connection failure of the heater harness of the fuser unit Check the harness connection of the heater of the fuser unit and reconnect it. 3 Harness connection failure of the eject sensor PCB Check the harness connection of the eject sensor PCB and reconnect it. 4 Harness connection failure of the low-voltage power supply PCB Check the harness connection of the low-voltage power supply PCB and reconnect it. 5 Eject sensor PCB failure Replace the eject sensor PCB ASSY. 6 Fuser unit failure Replace the fuser unit. 7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 8 Main PCB failure Replace the main PCB ASSY.
Code: 050C
Display: Print Unable 05
Description: When the temperature of the center thermistor of the fuser unit is higher than the idle temperature, the side thermistor of the fuser unit detected a temperature lower than the specified value.
Remedy: <User Check> - Turn the power OFF and ON again after several seconds to check if the error code disappears. 1 Connection failure of the center or side thermistor harness of the fuser unit Check the harness connection of the center or side thermistor of the fuser unit and reconnect them. 2 Connection failure of the heater harness of the fuser unit Check the harness connection of the heater of the fuser unit and reconnect it. 3 Harness connection failure of the eject sensor PCB Check the harness connection of the eject sensor PCB and reconnect it. 4 Harness connection failure of the low-voltage power supply PCB Check the harness connection of the low-voltage power supply PCB and reconnect it. 5 Eject sensor PCB failure Replace the eject sensor PCB ASSY. 6 Fuser unit failure Replace the fuser unit. 7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 8 Main PCB failure Replace the main PCB ASSY.