• Code: DD
• Description: Fuser unit error except error codes 6A, 6B, 6C, 6D, 6F, 76, 78, DE and E2.
• Causes:
• Remedy: 1 Harness connection failure between fuser unit connector and paper eject sensor PCB ASSY Check the harness connection between the fuser unit connector and paper eject sensor PCB ASSY, and reconnect it. 2 Harness connection failure between fuser unit connector and low voltage power supply PCB ASSY Check the harness connection between the fuser unit connector and low voltage power supply PCB ASSY, and reconnect it. 3 Harness connection failure between paper eject sensor PCB and main PCB Check the harness connection between the paper eject sensor PCB and main PCB, and reconnect it. 4 Paper eject sensor PCB failure Replace the paper eject sensor PCB ASSY. 5 Low voltage power supply PCB failure Replace the low voltage power supply PCB ASSY. 6 Main PCB failure Replace the main PCB ASSY. 7 Fuser unit failure Replace the fuser unit.

• Code: DE
• Description: When the center thermistor is higher than the idle temperature, it is detected that the side thermistor temperature is lower than 60°C.
• Causes:
• Remedy: 1 Harness connection failure between paper eject sensor PCB ASSY and fuser unit Check the harness connection between the paper eject sensor PCB ASSY and fuser unit, and reconnect it. 2 Side thermistor or center thermistor failure Replace the fuser unit. 3 Paper eject sensor PCB failure Replace the paper eject sensor PCB ASSY. 4 Main PCB failure Replace the main PCB ASSY.

• Code: E0
• Description: Program error. (An error occurred in the ROM checksum.)
• Causes:
• Remedy: 1 Firmware update failure Upload the latest firmware. 2 Main PCB failure Replace the main PCB ASSY.

• Code: E2
• Description: When the center thermistor is lower than the idle temperature, it is detected that the side thermistor temperature is higher than 280°C.
• Causes:
• Remedy: 1 Heat roller dirty Clean the heat roller. 2 Harness connection failure between paper eject sensor PCB ASSY and fuser unit Check the harness connection between the paper eject sensor PCB ASSY and fuser unit, and reconnect it. 3 Side thermistor or center thermistor failure Replace the fuser unit. 4 Paper eject sensor PCB failure Replace the paper eject sensor PCB ASSY. 5 Main PCB failure Replace the main PCB ASSY.

• Code: E6
• Description: Write error in EEPROM of the main PCB.
• Causes: 1 Main PCB failure
• Remedy: Replace the main PCB ASSY.

• Code: EC
• Description: Main fan error.
• Causes:
• Remedy: 1 Harness connection failure of main fan Check the harness connection of the main fan and reconnect it. 2 Main fan failure Replace the main fan. 3 High voltage power supply PCB failure Replace the high voltage power supply PCB ASSY. 4 Main PCB failure Replace the main PCB ASSY.

• Code: ED
• Description: Communication with the wireless LAN PCB cannot be established upon startup of the power supply.
• Causes:
• Remedy: 1 Harness connection failure of wireless LAN PCB Check the harness connection of the wireless LAN PCB and reconnect it. 2 Wireless LAN PCB failure Replace the wireless LAN PCB. 3 High voltage power supply PCB failure Replace the high voltage power supply PCB ASSY. 4 Main PCB failure Replace the main PCB ASSY.

• Code: EE
• Description: Unavailability of communication after connecting to the wireless LAN PCB is detected.
• Causes:
• Remedy: 1 Harness connection failure of wireless LAN PCB Check the harness connection of the wireless LAN PCB and reconnect it. 2 Wireless LAN PCB failure Replace the wireless LAN PCB ASSY. 3 High voltage power supply PCB failure Replace the high voltage power supply PCB ASSY. 4 Main PCB failure Replace the main PCB ASSY.