CHAPTER 7 TROUBLESHOOTING
Confidential
7-24
M-10 Pickup function of paper tray does not work.
Possible cause Step Check Result Remedy
Link lever does
not move
smoothly.
1 Does the link lever work?
Isn't the link lever bent?
Yes Remove the cause of non-
smooth operation of the link
lever.
Replace the link lever.
Pickup roller
holder ASSY
does not move
smoothly.
2 Does the pickup roller holder
ASSY move up and down?
No Replace the pickup roller
holder ASSY.
Main motor
failure
3 Does the main motor work? No Replace the main motor.
Pressure plate
drive cam failure
4 Does the pressure plate drive
cam rotate?
No Replace the main frame L
ASSY.
M-11 The new toner is not sensed.
Possible cause Step Check Result Remedy
The toner
cartridge is not
set to the main
body correctly.
1 The toner cartridge is not
inserted completely.
Yes Reset the cartridge.
New toner
detection switch
failure
2 Isn't the toner sensed even if
the switch is held?
Yes Replace the switch.
Main PCB
failure
3 Is the problem solved by
replaceing the main PCB?
No Replace the main PCB.
M-12 Maximum speed is slow.
Possible cause Step Check Result Remedy
Two or more
sheets of the
paper in the tray
are pulled to
feed.
1 Does paper double feeding
occur?
Yes Replace the separation pad.
Foreign body
attached to the
tail edge
actuator
2 Is a foreign body caught on the
tail edge actuator?
Yes Remove a foreign body.
Tail edge
actuator failure
3 Is the tail edge actuator
deformed?
Yes Replace the tail edge actuator.
Tail edge sensor
malfunction
4 Is the tail edge sensor turned
ON?
Yes Replace the tail edge sensor.
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