Canon 1130 Service Manual page 666

24 The copy is uneven (random)
Cause
------------
Photosensitive
drum shaft
Flywheel
Photosensitive
drum frame unit
Photosensitive
drum assembly
Photosensitive
drum drive
assembly
COPYRIGHT © 2002 CANON INC.
Step
1 Generate a halftone print using
TYPE=5 (DENS-M/C/Y/K=25,
TXPH=0).
2 Is the screw on the core fixing roll
of the photosensitive drum loose?
3 Slide the photosensitive drum
frame unit about 50 mm out of the
copier. Is there a discrepancy of 2
mm or more between the drum
shaft and the photosensitive drum
flange hole?
4 Can the photosensitive drum unit
be slid in and out of the copier
smoothly?
5 Is the fixing screw on the flywheel
loose?
6 Is the flywheel mounted at an
angle?
7 Are the two fixing pins used to
secure the photosensitive drum
frame unit to the copier loose?
8 Is the front side plate of the
photosensitive drum frame unit
mounted to the copier's front side
plate loose? Or, are the three
screws loose?
9 Is there damage, dents, or caking of
toner on the photosensitive drum or
the drum flange?
10 Is there dirt or damage to the 300T
gear (FS5-0651) on the
photosensitive drum?
CANON CLC1100/1130/1150/1160/1180 REV.1 FEB. 2002 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 13 TROUBLESHOOTING
Checks Yes/No Action
YES Tighten the screw.
YES Correct the drum shaft
position using the drum
shaft positioning tool
(FY9-3045).
NO Correct the position of
the drum motor support
plate.
YES Tighten the fixing
screw.
YES Mount the flywheel
properly.
YES Tighten the fixing pins.
YES Tighten the screws.
YES Clean or replace the
part.
(After replacement,
execute the work under
II. C. 2.)
YES Clean or replace the
part.
(After replacement,
execute the work under
II. C. 2.)
NO Check the 140T gear
and the 108/20T gear of
the photosensitive drum
drive assembly for
damage and dirt.
13-95