• 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.
• Remedy: 1 Connection failure of the center thermistor harness of the fuser unit Reconnect the center thermistor harness of the fuser unit. 2 Connection failure of the heater harness of the fuser unit Reconnect the heater harness of the fuser unit. 3 Connection failure of the low voltage PCB harness Reconnect the low voltage PCB harness. 4 Fuser unit failure Replace the fuser unit. 5 Low voltage power supply PCB failure Replace the low voltage power supply PCB unit. 6 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 that the center thermistor of the fuser unit indicated a temperature error.
• Remedy: 1 Connection failure of the center thermistor harness of the fuser unit Reconnect the center thermistor harness of the fuser unit. 2 Connection failure of the heater harness of the fuser unit Reconnect the heater harness of the fuser unit. 3 Connection failure of the low voltage PCB harness Reconnect the low voltage PCB harness. 4 Fuser unit failure Replace the fuser unit. 5 Low voltage power supply PCB failure Replace the low voltage power supply PCB unit. 6 Main PCB failure Replace the main PCB ASSY.

• Code: 050D
• Display: Print Unable 05 Turn the power off and then back on again.
• Description: Operated 100% heating for longer than the specified time in the fuser unit while printing.
• Remedy: 1 Connection failure of the center thermistor harness of the fuser unit Reconnect the center thermistor harness of the fuser unit. 2 Connection failure of the heater harness of the fuser unit Reconnect the heater harness of the fuser unit. 3 Connection failure of the low voltage PCB harness Reconnect the low voltage PCB harness. 4 Fuser unit failure Replace the fuser unit. 5 Low voltage power supply PCB failure Replace the low voltage power supply PCB unit. 6 Main PCB failure Replace the main PCB ASSY.

• Code: 050F
• Display: Print Unable 05 Turn the power off and then back on again.
• Description: Detected an unknown error in the fuser unit.
• Remedy: 1 Connection failure of the center thermistor harness of the fuser unit Reconnect the center thermistor harness of the fuser unit. 2 Connection failure of the heater harness of the fuser unit Reconnect the heater harness of the fuser unit. 3 Connection failure of the low voltage PCB harness Reconnect the low voltage PCB harness. 4 Fuser unit failure Replace the fuser unit. 5 Low voltage power supply PCB failure Replace the low voltage power supply PCB unit. 6 Main PCB failure Replace the main PCB ASSY.

• Code: 0900
• Display: Print Unable 09 Turn the power off and then back on again.
• Description: Detected irregular power supply more than 100 times.
• Remedy: 1 Low voltage power supply PCB failure Replace the low voltage power supply PCB unit. Reset the irregular power supply detection counter after replacement. 2 Main PCB failure Replace the main PCB ASSY. Note: • The irregular power supply detection error (error code: 0900) occurs when there is a large distortion in the power supply voltage supplied to the machine. In this case, if the same power supply is used, the same error may occur even when the low voltage power supply PCB unit is replaced. Ask the user to review the installation environment.

• Code: 0B01
• Display: Print Unable 0B Turn the power off and then back on again.
• Description: An error occurred in the high voltage power supply PCB ASSY while operating.
• Remedy: 1 Connection failure of the high voltage PCB harness Reconnect the high voltage PCB harness. 2 High voltage power supply PCB failure Replace the high voltage power supply PCB ASSY. 3 Main PCB failure Replace the main PCB ASSY.

• Code: 0B02
• Display: Print Unable 0B Turn the power off and then back on again.
• Description: An error occurred in the high voltage power supply PCB ASSY when the machine is in the ready state.
• Remedy: 1 Connection failure of the high voltage PCB harness Reconnect the high voltage PCB harness. 2 High voltage power supply PCB failure Replace the high voltage power supply PCB ASSY. 3 Main PCB failure Replace the main PCB ASSY.

• Code: 4000
• Display: Drum End Soon
• Description: The number of rotations of the drum unit is reaching the upper limit.
• Remedy: 1 Replace the drum unit with a new one and reset the drum counter. If the error display is not cleared, the main PCB is faulty. Replace the main PCB ASSY.