• Code: 6004
• Display: Cover is Open Close the Fuser Cover which can be found behind the Back Cover of the machine.
• Description: The eject sensor detected that the fuser cover ASSY was open.
• Causes: 1 Paper jam at the eject actuator 2 Eject actuator that has come off or that has been caught 3 Eject sensor PCB harness connection failure 4 Fuser cover ASSY installation failure 5 Eject sensor PCB failure 6 Main PCB failure

• Code: 6101
• Display: No Toner Open the Top Cover, then install Toner Cartridge.
• Description: New toner detection terminal not being conducting caused the machine to detected that a toner cartridge (Black) is not set.
• Causes: 1 Dirt on the terminal of the high-voltage power supply PCB 2 High-voltage power supply PCB failure 3 Main PCB failure

• Code: 6102
• Display: No Toner Open the Top Cover, then install Toner Cartridge.
• Description: New toner detection terminal not being conducting caused the machine to detected that a toner cartridge (Yellow) is not set.
• Causes: 1 Dirt on the terminal of the high-voltage power supply PCB 2 High-voltage power supply PCB failure 3 Main PCB failure

• Code: 6103
• Display: No Toner Open the Top Cover, then install Toner Cartridge.
• Description: New toner detection terminal not being conducting caused the machine to detected that a toner cartridge (Magenta) is not set.
• Causes: 1 Dirt on the terminal of the high-voltage power supply PCB 2 High-voltage power supply PCB failure 3 Main PCB failure

• Code: 6104
• Display: No Toner Open the Top Cover, then install Toner Cartridge.
• Description: New toner detection terminal not being conducting caused the machine to detected that a toner cartridge (Cyan) is not set.
• Causes: 1 Dirt on the terminal of the high-voltage power supply PCB 2 High-voltage power supply PCB failure 3 Main PCB failure

• Code: 6208
• Display: Drum ! Slide the Green tab on Drum Unit.
• Description: Immediately after power-ON or the joint cover ASSY was closed, GRID current error detected that no drum unit (Color) was set.
• Causes: 1 Dirt on the GRID terminals of the main body 2 Dirt on the terminal of the high-voltage power supply PCB 3 High-voltage power supply PCB failure 4 Main PCB failure

• Code: 6209
• Display: Drum ! Slide the Green tab on Drum Unit.
• Description: Immediately after power-ON or the joint cover ASSY was closed, GRID current error detected that one of the drum units (Color) was not set.
• Causes: 1 Dirt on the GRID terminals of the main body 2 Dirt on the terminal of the high-voltage power supply PCB 3 High-voltage power supply PCB failure 4 Main PCB failure

• Code: 620A
• Display: Drum ! Slide the Green tab on Drum Unit.
• Description: Immediately after power-ON or the joint cover ASSY was closed, GRID current error detected that no drum unit (Black) was set.
• Causes: 1 Dirt on the GRID terminals of the main body 2 Dirt on the terminal of the high-voltage power supply PCB 3 High-voltage power supply PCB failure 4 Main PCB failure