COPYRIGHT © 1999 CANON INC. CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
13-91
CHAPTER 13 TROUBLESHOOTING
17
The copy has uneven density (A3, center).
Cause
------------
Photosensitive
drum shaft
Transfer drum
assembly
Attraction push-
on roller unit
Action
Tighten the screw.
Tighten the fixing screw.
Mount the flywheel
properly.
Clean or replace the
transfer drum assembly.
Clean or replace the
part.
Replace the part.
Replace the part.
Mount the part properly,
or replace it.
Replace the roller.
Check the scraper for
deformation; if
necessary, replace it.
Step
1
2
3
4
5
6
7
8
9
10
Yes/No
YES
YES
YES
YES
YES
YES
YES
YES
NO
YES
Checks
Generate a halftone test print using
TYPE=5 (DENS-M/C/Y/K=25,
TXPH=0), and make checks.
Is the screw on the core fixing tab
of the photosensitive drum loose?
Is the fixing screw on the flywheel
loose?
Is the flywheel mounted at an
angle?
Is the 300T gear of the transfer
drum soiled or damaged?
Is there deformation, damage or
caking of toner on the positioning
rubber ring (FB2-0524), transfer
drum sheet connecting plate,
transfer drum frame, or transfer
sheet?
Is there deformation on the transfer
blade/attraction brush?
Is the end of the transfer ring (FB2-
0584) bent?
Is there deformation/warping on
the attraction push-on roll unit?
Is the attraction roller moved/
rotated smoothly?
Summary of Contents for CLC 1120
Page 6: ......
Page 20: ......
Page 22: ......
Page 48: ......
Page 94: ......
Page 96: ......
Page 114: ......
Page 134: ......
Page 136: ......
Page 152: ......
Page 242: ......
Page 346: ......
Page 374: ......
Page 376: ......
Page 412: ......
Page 452: ......
Page 454: ......
Page 517: ......
Page 881: ......
Page 893: ......
Page 895: ......
Page 899: ......