Troubleshooting Feeding Faults; Double Feeding; Wrinkling - Canon NP6330 Service Manual

CHAPTER 11 TROUBLESHOOTING
B. Troubleshooting Feeding Faults
1

Double feeding

Step
Cause
1
Separation
roller
Spring
2

Wrinkling

Step
Cause
1
Pick-up
assembly
2
Copy paper
3
Paper guide
4
Lower roller 5
pressure
Upper/lower
roller
11-112
Checks
Is the separation roller deformed
or worn?
Checks
Turn off the power while copy
paper is moving through the
feeding assembly. At this time, is
the copy paper wrinkled? Or, is it
moving askew?
Try fresh copy paper. Is the
problem corrected?
Is the paper of a type
recommended by Canon?
Is the paper guide soiled with
toner?
Is the lower roller pressure (nip)
within specification?
COPYRIGHT © 1997 CANON INC.
YES/NO
YES
NO
YES/NO
YES
YES
NO
YES
NO
YES
CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
Action
Replace the separation
roller.
Replace the spring used
to pull the separation
roller. Change the
hooking position of the
spring.
Action
Check the pick-up
assembly. Check the
registration roller.
The copy paper may be
moist; advise the user
on the correct method of
storage.
Advise the user to use
recommended paper.
Clean it with solvent.
Make adjustments.
Try replacing the upper
and lower rollers one
after the other.