Canon 1130 Service Manual page 665

CHAPTER 13 TROUBLESHOOTING
22 The copy has color displacement (entire area; random).
Cause
------------
Photosensitive
drum shaft
Flywheel
Photosensitive
drum drive
assembly
23 The copy has uneven density (at intervals of 1.8 mm).
Cause
------------
Photosensitive
drum shaft
Transfer drum
assembly
13-94
COPYRIGHT © 2002 CANON INC.
Step Checks
1 Generate a grid test print
(TYPE=6), and make a check.
2 Is the screw on the core fixing roll
of the photosensitive drum loose?
3 Is the fixing screw of the flywheel
loose?
4 Is the flywheel mounted at an
angle?
Step Checks
1 Generate a halftone test print using
TYPE=5 (DENS-M/C/Y/K=25,
TXPH=0), and make a check.
2 Is the screw on the core fixing roll
of the photosensitive drum loose?
3 Is the return spring of the jam
removal handle of the transfer
drum displaced?
4 Is the separation charging assembly
mounted to the transfer drum with
a screw other than specified
(M4x6; binding)?
5 Is there damge, dents, or caking of
toner on the photosensitive drum or
the drum flange?
6 Is there dirt or damge on the 300T
gear of the transfer drum?
7 Is there deformation, damge, or
caking of toner on the positioning
rubber ring (FB2-0524), transfer
drum sheet connecting plate,
transfer drum frame, or transfer
sheet?
CANON CLC1100/1130/1150/1160/1180 REV.1 FEB. 2002 PRINTED IN JAPAN (IMPRIME AU JAPON)
Yes/No Action
YES Tighten the screw.
YES Tighten the fixing
screw.
YES Mount the flywheel
properly.
NO Check the 140T gear
and the 108/20T gear of
the photosensitive drum
drive assembly for
damage and dirt.
Yes/No Action
YES Tighten the screw.
YES Mount the handle
properly.
YES Use a specified screw.
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.)
YES Clean, or replace the
part.
NO Check the transfer blade/
attraction brush for
deformation; replace any
deformed part.