Canon NP6317, Service Manual

Page: 221 / 248

CHAPTER 10 TROUBLESHOOTING
COPYRIGHT © 1999 CANON INC. CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
10-57
1. Jamming in the paper pick-up area
Action
Push the cassette in fully.
1. Check the paper hold-
down tabs.
2. Check the strength of
the paper-lifting
springs.
1. Change the copy pa-
per.
2. Instruct the user about
the correct method of
storing paper.
Refer to the sub-section
"Paper is not picked up."
Replace the pick-up roll-
ers.
Replace the pre-registra-
tion paper sensor (Q2).
1. Check each feed roller
for wear and deforma-
tion.
2. Check the paper guide
plate for burrs or de-
formation.
Result
No
Yes
Yes
No
Yes
No
Yes
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?
Procedure
1
2
3
4
5
6
Cause/Problem
area
Cassette
Copy paper
DC controller
PCB, Pick-up
roller clutch
Pick-up roller
Pre-registra-
tion paper
sensor (Q2)
Feed roller
and paper
guide plate