The Copy Has Black Lines (Feeding Direction,Fine) - Canon ImageRunner 600 Service Manual

CHAPTER 13 TROUBLESHOOTING
9

The copy has black lines (feeding direction,fine).

Cause Step
Scanner (dirt)
Fixing system
Primary
charging
assembly (dirt)
Photosensitive
drum cleaner
assembly
Photosensitive
drum
Developing
system
13-72
COPYRIGHT © 1999 CANON INC.
1 Does the problem occur in copy images
only?
2 Using the door switch actuator, press the
Copy Start key while keeping the front
cover open. Turn off the power switch
while copy paper is in the feeding
assembly, and check the image. Is the
copy image normal?
3 Clean the primary charging assembly. Is
the problem corrected?
4 Is there paper or foreign matter lodged on
the cleaning blade of the cleaner
assembly?
5 Are there scratches on the edge of the
cleaning blade? (Feel the edge of the
cleaning blade for scratches.)
6 Are there scratches or black lines in the
peripheral direction of the photosensitive
drum?
Checks
CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.
Yes/No Action
YES The cause is between
the scanner and the
CCD:
1. Check the standard
white plate and each
mirror for dirt.
2. Execute
COPIER>FUNCTION
>CCD>CCD-ADJ
in service mode.
YES The cause is after the
fixing system; check
the following:
1. fixing assembly
upper roller for
scratches and black
lines.
2. cleaning belt for dirt.
3. thermistor and
separation claw for
dirt, and
reciprocating
operation
YES End.
YES Remove the foreign
matter, and remove the
cleaning blade and the
cleaner assembly
external covers.
YES Reverse the edge. (If
both edges are
scratched, replace the
blade.)
YES Replace the
photosensitive drum. If
scratches are found,
find out the cause.
NO Check the developing
assembly.