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

• Code: E9
• Description: Maintenance monitor error
• Causes: 1 Harness connection failure of engine PCB ASSY. 2 Engine PCB failure. 3 Main PCB failure.
• Remedy: 1 Harness connection failure of engine PCB ASSY Check the harness connection between the main PCB ASSY and engine PCB ASSY, and reconnect it. 2 Engine PCB failure Replace the engine PCB ASSY. 3 Main PCB failure Replace the main PCB ASSY.

• Code: EC
• Description: Main fan error
• Causes: 1 Connection failure of main fan connector. 2 Main fan failure. 3 HVPS control PCB failure. 4 High-voltage power supply PCB failure. 5 Engine PCB failure. 6 Main PCB failure.
• Remedy: 1 Connection failure of main fan connector Check the connection of the main fan connector and reconnect it. 2 Main fan failure Replace the main fan ASSY. 3 HVPS control PCB failure Replace the HVPS control PCB ASSY. 4 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY. 5 Engine PCB failure Replace the engine PCB ASSY. 6 Main PCB failure Replace the main PCB ASSY.

• Code: EF
• Description: Low-voltage power supply PCB failure
• Causes: 1 Low-voltage power supply PCB failure. 2 Main PCB failure.
• Remedy: 1 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 2 Main PCB failure Replace the main PCB ASSY.

• Code: F2
• Description: Waste toner box near full
• Causes: 1 HVPS control PCB failure. 2 Engine PCB failure.
• Remedy: 1 HVPS control PCB failure Replace the HVPS control PCB ASSY. 2 Engine PCB failure Replace the engine PCB ASSY.

• Code: F4
• Description: Waste toner box life end
• Causes: 1 HVPS control PCB failure. 2 Engine PCB failure.
• Remedy: 1 HVPS control PCB failure Replace the HVPS control PCB ASSY. 2 Engine PCB failure Replace the engine PCB ASSY.

• Code: F8
• Description: Battery connection error
• Causes: 1 Harness connection failure of battery. 2 Battery failure. 3 Main PCB failure.
• Remedy: 1 Harness connection failure of battery Check the connection of the battery connector and reconnect it. 2 Battery failure Replace the battery ASSY. 3 Main PCB failure Replace the main PCB ASSY.

• Code: F9
• Description: Power turned OFF while the function code 74 is being executed and “PARAMETER INT” is being displayed
• Causes: 1 Incorrect operation when setting EEPROM customize code.
• Remedy: 1 Incorrect operation when setting EEPROM customize code Re-enter the EEPROM customize code.