Faulty Feeding - Canon GP160F Service Manual

CHAPTER 13 TROUBLESHOOTING
C.

Faulty feeding

1 Double feeding
Cause Steps
Paper amount 1
Paper condition 2
3
Cassette claw 4
Separation 5
roller
Torque limiter
Multifeeder 6
separation pad
Separation pad
pressure spring
2. Creases
Cause Steps
Pick-up assem- 1
bly
Paper condition 2
3
Fixing unit inlet 4
guide
Fixing unit
13-38
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Checks
Is the cassette overloaded with
paper (over 250 sheets)?
Is the trouble resolved when new
paper is used?
Does double feeding occur at cas-
sette pick-up?
Is the cassette separation claw mis-
shapen?
Check the surface of the separation
roller. Is it normal?
Is the surface of the multifeeder sep-
aration pad or the separation sub-
pad worn?
Checks
Turn off the power source as the
paper is passing through the feeder
assembly. Are there any creases or
skewing on the copy paper at this
time?
Is the trouble resolved when new
paper is used?
Is the trouble resolved when paper
recommended by Canon is used?
Is there any toner or debris on the
fixing unit inlet guide?
COPYRIGHT © 1999 CANON INC.
Yes/No
YES Explain the cassette
paper capacity to the
user.
YES The paper may be
damp. Instruct the user
on storage methods.
NO Check from Item 6.
YES Repair the claw. If the
problem is not
resolved, replace the
cassette.
NO Clean the roller. If the
trouble is not resolved,
replace the separation
roller.
YES Replace the torque lim-
iter.
YES Replace the pad.
NO Check if the separation
pad pressure spring is
misshapen.
Yes/No
YES Check the feeding
assembly rollers and
registration rollers.
YES The paper may be
damp. Instruct the user
on storage methods.
YES Request that the user
use the recommended
paper.
YES Clean the inlet guide.
NO Replace the fixing unit.
CANON GP160 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
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