The Copy Has A Blurred Image - Canon ImageRunner 600 Service Manual

CHAPTER 13 TROUBLESHOOTING
18

The copy has a blurred image.

Cause Step
Scanner drive
cable
Scanner rail
Photosensitive
drum
Drum drive gear
Developing gear
Cleaner
assembly gear
Drum drive
system
13-78
COPYRIGHT © 2000 CANON INC.
1 Is the cable on the cable pulley
overlapping while the scanner is moving?
Further, is the cable too loose or too taut?
2 Move the No. 1 mirror mount slowly by
hand. Does the No. 1 mirror mount move
smoothly?
3 Does the problem occur at intervals of
about 340 mm?
4 Does the problem occur at intervals of
about 4 mm?
5
Does the problem occur at intervals of
about 2 mm?
6 Does the problem occur at intervals of
about 10 mm?
Checks
CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.
Yes/No Action
YES 1. Route the cable
once again.
2. If the cable is
twisted or frayed,
replace it.
NO Clean the surface of the
scanner rail with
alcohol. Thereafter,
apply a small amount
of lubricant.
YES 1. Check the drum gear.
2. Check the drum ends
(where the
developing rolls
come into contact)
for scratches and
protrusions.
YES Check the drum drive
gear.
YES Check the developing
assembly.
YES Check the cleaner
assembly.
NO Check the drum drive
system.