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3.3

Paper Jam

■ Paper jam in the paper tray and front cover
Step
Dirt on edge
1
sensor
Registration front
actuator/edge
2
actuator catching
on some position
Registration front
sensor PCB
(registration front
3
actuator/edge
actuator failure)
Registration
4
solenoid failure
Toner LED PCB
5
failure
High-voltage
power supply PCB
6
failure
Main PCB failure
7
■ Paper jam in the back cover and paper eject section
Step
Foreign object
1
around fuser unit
Paper eject
2
actuator failure
Fuser cover ASSY
3
loose
Outer chute ASSY
4
loose
Eject roller 2
malfunction
5
Paper eject
6
sensor PCB
failure
Cause
Is there paper powder on
the edge sensor?
Does the registration front
actuator/edge actuator
move smoothly?
Does the registration front
sensor move smoothly?
(Check it following the
procedure described in
"Factory Inspection
Mode" in 1.3 Service
Mode in Chapter
Is the problem solved
after replacing the
registration solenoid?
Is the problem solved
after replacing the toner
LED PCB ASSY?
Is the problem solved
after replacing the High-
voltage power supply
PCB ASSY?
Is the problem solved
after replacing the Main
PCB ASSY?
Cause
Is there a foreign object
around the fuser unit?
Does the paper eject
actuator move smoothly?
Is it damaged?
Is the fuser cover ASSY
fitted correctly?
Is the outer chute ASSY
fitted correctly?
Is each pinch roller of the
inner chute ASSY
attached to each eject
roller 2 of top cover ASSY
properly?
Is the problem solved
after replacing the paper
eject sensor PCB?
Check
Result
Yes
No
No
6)
Yes
Yes
Yes
Yes
Check
Result
Yes
No
No
No
No
Yes
3-28
Remedy
Clean the edge sensor.
Re-assemble the
registration front actuator/
edge actuator.
Replace the registration
front sensor PCB ASSY.
Replace the registration
solenoid.
Replace the toner LED
PCB ASSY.
Replace the High-voltage
power supply PCB ASSY.
Replace the Main PCB
ASSY.
Remedy
Remove the foreign
object.
Replace the paper eject
actuator.
Fit the fuser cover ASSY
correctly.
Fit the outer chute ASSY
fitted correctly.
Replace the inner chute
ASSY.
Replace the paper eject
sensor PCB ASSY.
Confidential

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Troubleshooting

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