1-13
Confidential
8) Front cover is open
Front cover opened
9) Fuser cover is open
Fuser cover opened
User Check
• Check if the front cover is closed certainly.
Step Cause Remedy
1
Cover sensor harness ASSY 
failure
Check the sensor performance following 
the procedure in "Factory Inspection Mode" 
(Chapter 5). If any problem occurs, replace 
the Cover sensor harness ASSY.
2
Harness connection failure of 
Cover sensor harness ASSY
Check the harness connection of the Cover 
sensor harness ASSY and reconnect it.
3
Part pressing the Cover sensor 
harness ASSY is broken, which is 
provided at inside of front cover
Replace the front cover ASSY.
4 Toner LED PCB ASSY failure Replace the toner LED PCB ASSY.
5 Main PCB ASSY failure Replace the main PCB ASSY.
User Check
• Check if the fuser cover is closed certainly.
Step Cause Remedy
1
Paper eject actuator catching on 
some position
Correct catching of the paper eject 
actuator.
2 Paper eject actuator failure Replace the paper eject actuator.
3 Eject sensor PCB ASSY failure Replace the eject sensor PCB ASSY.
4 Main PCB ASSY failure Replace the main PCB ASSY.