• Code: 0504
• Display: Print Unable 05 Turn the power off and then back on again.
• 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 PCB flat cable Reconnect the eject sensor PCB flat cable. 4 Connection failure of the LVPS harness Reconnect the LVPS harness. 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 Turn the power off and then back on again.
• 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 PCB flat cable Reconnect the eject sensor PCB flat cable. 4 Connection failure of the LVPS harness Reconnect the LVPS harness. 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 Turn the power off and then back on again.
• Description: The center thermistor of the fuser unit detected a temperature fall greater than the specified value within the specified time. Print Unable 05 Turn the power off and then back on again. <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset.
• 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 PCB flat cable Reconnect the eject sensor PCB flat cable. 4 Connection failure of the LVPS harness Reconnect the LVPS harness. 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 Turn the power off and then back on again.
• 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 PCB flat cable Reconnect the eject sensor PCB flat cable. 4 Connection failure of the LVPS harness Reconnect the LVPS harness. 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 Turn the power off and then back on again.
• 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 PCB flat cable Reconnect the eject sensor PCB flat cable. 4 Connection failure of the LVPS harness Reconnect the LVPS harness. 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 Turn the power off and then back on again.
• 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 PCB flat cable Reconnect the eject sensor PCB flat cable. 4 Connection failure of the LVPS harness Reconnect the LVPS harness. 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: 050F
• Display: Print Unable 05 Turn the power off and then back on again.
• Description: An error occurred in the fuser unit. Print Unable 05 Turn the power off and then back on again. Print Unable 05 Turn the power off and then back on again. Print Unable 05 Turn the power off and then back on again. Print Unable 05 Turn the power off and then back on again.
• 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 PCB flat cable Reconnect the eject sensor PCB flat cable. 4 Connection failure of the LVPS harness Reconnect the LVPS harness. 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. <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset.

• Code: 0600
• Display: Print Unable 06 Turn the power off and then back on again.
• Description: A communication error occurred between the ASIC controlled by engine and the motor driver.
• Remedy: 1 Main PCB failure Replace the main PCB ASSY.