Troubleshooting
Service Manual 8-11
8.3.4 Jam at B, C
Symptoms: Paper is jammed inside the fuser.
Paper is caught in the exit actuator.
Paper is caught in the exit roller and fuser, but has not passed through the feed actuator.
8.3.5 Jam at C (in the duplex area)
Symptoms: Indicated a “Jam at C” on the control panel.
Possible Cause Repair Actions
The exit sensor is defective if a Jam
at B, C occurs after the paper is
completely fed out of the fuser.
Check the exit sensor actuator for
damage.
■ Check to see if the exit flag is bent
or damaged.
■ Check for burrs in the exit area
and the exit flag. Verify the
actuator is working properly.
■ Check for debris or caught wiring.
The paper is wrapped in the fuser.
■ Accordion jams occur.
■ Fuser temperature may
increase.
■ If the heat roller or pressure
roller may get contaminated
by toner.
Replace the fuser.
There are accordion type ripples
inside the fuser.
Replace the fuser.
Check the condition and operation of
the exit assembly, and replace as
necessary.
Check the exit sensor in EDC
mode.
Replace the exit sensor if defective.
Possible Cause Repair Actions
Check the media. Some “stiffer”
medias may have problems moving
through the duplex path.
Try a different type of media.
Check the feed and exit sensor in
EDC mode.
Replace the feed sensor, exit sensor, or
main board.
If the paper does not reach the feed
sensor because of constant
jamming in the duplex area.
Replace the duplex unit.
Exit Sensor
Exit Sensor
Feed Sensor
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