Canon 1130 Service Manual page 654

11 The copy has a soiled image/back.
Cause
------------
Image margin
Primary charging
assembly,
developing bias,
laser power
Cleaning
No. 2 cleaning
blade
Side scraper
Attraction roller
COPYRIGHT © 2002 CANON INC.
Step
1 Is the image soiled only after a
double-sided copy has been made?
2 Is the image margin within
specification?
3 Is the image margin foggy?
4 Is the cleaning blade of the
photosensitive drum cleaner
assembly locked in position?
5 Is paper or foreign matter stuck on
the cleaning blade of the
photosensitive drum cleaner
assembly?
6 Is there deformation or scratches
on the edge of the cleaning blade?
Feel the edge of the cleaning blade
(with your finger) for deformation
and presence/absence of scratches.
7 Is there a buildup of waste toner at
the bottom of the scoop-up sheet?
8 Is there warping or bending on the
scoop-up sheet (2 pc.) of the
photosensitive drum cleaning
assembly?
9 Is the No. 2 cleaning blade in firm
contact with the photosensitive
drum?
10 Is the edges of paper soiled on the
photosensitive drum?
11 Is the attraction roller soiled? Or,
are there scratches, or any other
fault on each roller?
CANON CLC1100/1130/1150/1160/1180 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 13 TROUBLESHOOTING
Checks Yes/No Action
YES Go to step 11.
NO Make adjustments
according to II.
"Standards and
Adjustments."
YES Check the primary
charging assembly for
soiling; check the
developing bias and
laser power.
NO Lock and secure the
cleaning blade in
position.
YES Remove the foreign
matter, and clean the
cleaning blade and the
outside the cleaning
blade.
YES If deformation or
scratches are found,
remove the cause, and
replace the cleaning
blade.
YES Clean it.
YES Replace the scoop-up
sheet.
NO • Check the blade.
• Mount the No. 2
cleaning blade
properly.
YES Replace the side scraper.
YES Clean the attraction
roller, scraper, and the
area around them; if a
fault is found, replace
the scraper.
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