Canon GP160F Service Manual page 258

CHAPTER 13 TROUBLESHOOTING
11 White Strips (vertical)
12 Thin White Lines (vertical)
Cause Steps
Exposure sys- 1
tem
Transfer charg- 2
ing roller
Separation sta- 3
tic charge elim-
inator
Cartridge 4
Fixing
Assembly
13 Leading Edge Displacement
Cause Steps
Document 1
Paper curl 2
Paper overload 3
Pick-up roller 4
Feed roller
Separation
roller
Registration 5
roller
Faulty adjust- 6
ment of leading
edge margin
DC controller
PCB
13-24
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Checks
Make a test print following the direc-
tions on page 13-120. Is the output
image normal?
Is there dirt on the transfer charging
roller?
Is there dirt on the separation static
charge eliminator?
Is the trouble resolved when the car-
tridge is replaced?
Checks
Is the document set properly?
Is the paper very curled?
Is the amount of paper set in the
cassette over the limit?
Are the rollers of the pick-up level on
which the displacement occurs nor-
mal?
Is the registration roller normal?
Is the trouble resolved when the
leading margin adjustment proce-
dures described on page 13-3 are
performed?
COPYRIGHT © 1999 CANON INC.
Yes/No
YES Clean the white refer-
ence plate, on the back
of the copyboard glass,
and mirrors 1-4.
YES Clean the roller. If
cleaning does not solve
the problem, replace
the roller.
YES Clean the separation
static charge eliminator.
YES End
NO Replace the fixing
assembly.
Yes/No
NO Reset the document.
YES Replace the paper.
YES Explain to the user that
each cassette can hold
a maximum of 250
sheets of paper.
NO Check each roller. If
any are worn, replace
them.
NO If the registration roller
is dirty, clean it. If it is
worn, replace it.
YES End
NO Replace the DC con-
troller PCB.
CANON GP160 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Action
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