2-40
Confidential
 Error code 6001
The front cover sensor detected that the front cover was open.
 Error code 6004
The eject sensor detected that the fuser cover was open.
Cover is Open
Close the Front Cover.
<User Check>
• Close the front cover.
Step Cause Remedy
1
Front cover failure Replace the front cover.
2
Front cover sensor failure Replace the high-voltage power supply PCB 
ASSY.
3
Main PCB failure Replace the main PCB ASSY.
Cover is Open
Close the Fuser Cover which can be found behind the Back Cover of the machine.
<User Check>
• Close the fuser cover.
Step Cause Remedy
1
Eject actuator coming off or 
caught in sections of the 
machine
Reattach the eject actuator.
2
Fuser cover attachment failure Reattach the fuser cover.
3
Connection failure of the eject 
sensor PCB flat cable
Reconnect the eject sensor PCB flat cable.
4
Eject sensor PCB failure Replace the eject sensor PCB ASSY.
5
Main PCB failure Replace the main PCB ASSY.