Canon NP6317 Service Handbook page 70

CHAPTER 6 TROUBLESHOOTING FEEDING PROBLEMS
1. Jamming in the paper pick-up area
Cause/Problem
Procedure
area
Cassette 1
2
Copy paper 3
DC controller 4
PCB, Pick-up
roller clutch
Pick-up roller 5
Pre-registra- 6
tion paper
sensor (Q2)
Feed roller
and paper
guide plate
6-2
Check
Is the cassette pushed fully into the copier?
Does the problem disappear when a differ-
ent casssette is used?
Is the copy paper curled or creased?
Does the pick-up roller rotate during the
copying cycle?
Are the pick-up roller shoes deformed or
worn?
Is the pre-registration paper sensor (Q2)
correctly?
Result Action
No Push the cassette in fully.
Yes 1.Check the paper hold-
down tabs.
2.Check the strength of
the paper-lifting
springs.
Yes 1.Change the copy pa-
per.
2.Instruct the user about
the correct method of
storing paper.
No Refer to the sub-section
"Paper is not picked up."
Yes Replace the pick-up roll-
ers.
No Replace the pre-registra-
tion paper sensor (Q2).
Yes 1.Check each feed roller
for wear and deforma-
tion.
2.Check the paper guide
plate for burrs or de-
formation.