Feeding Faults; Double Feeding; Wrinkles - Canon 1000 Service Manual

7. TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
B. Feeding Faults
1

Double Feeding

Cause Step
Separation roller
Pressure spring
2

Wrinkles

Cause Step
Cassette pick-up
assembly,
Duplexing unit
Paper
Paper guide
plate
Lower roller
pressure
Upper/lower
roller
7-148
COPYRIGHT © 2001 CANON INC.
Checks
1 Is the separation roller deformed or
worn?
Checks
1 Turn off the power while paper is
moving through the pick-up vertical
path assembly/pick-up feeding
assembly. Is the paper wrinkled at
this time? Is it moving askew?
2 Try fresh paper. Is the problem
corrected?
3 Try Canon-recommended paper. Is
the problem corrected?
4 Is the paper guide plate soiled with
toner or the like?
5 Is the lower roller pressure (nip)
within specification?
Yes/No
Yes/No
CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
Action
YES Replace the separation
roller.
NO Adjust the position of the
pressure spring.
Replace the pressure
spring of the separation
roller.
Action
YES Check the pick-up assem-
bly. Check the registration
roller.
YES The paper may be moist.
Advise the user on the
correct method of storing
paper.
YES Advise the user to use
recommended paper.
NO Check the heater of each
pick-up assembly to see if
it is operating normally.
YES Clean it with solvent.
NO Adjust it.
YES Try replacing the upper
and then the lower roller.