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