COPYRIGHT © 2001 CANON INC.
2000 2000 2000 2000
CANON SmartBase PC1200s/iR1200s REV. 0 DEC. 2001
7-29
CHAPTER 7 TROUBLESHOOTING
3.1.13 The output is soiled.
Rollers (manual feed pickup roller, registration roller, fixing film, delivery roller), Photosen-
sitive drum, Cartridge, Contact sensor
1) Is the problem at specific intervals?
YES: Identify the cause by referring to T07-301-01, and clean it. (If it is
the photosensitive drum, replace the cartridge.)
If the problem is not corrected, replace it.
NO:
Check for drops of toner from the cartridge.
If the problem occurs only in copy images, clean the selfoc lens
array of the contact sensor.
Image Faults by Component
Diam-
eter
*1
38.0
32.0
14.3
13.9
12.0
16.0
30.0
14.6
24.0
20.4
12.4
Image
fault
interval
*1
-
-
44.9
43.8
37.3
42.0
93.3
43.7
75.4
64.1
39.0
White
spot
√
√
√
Soiling
√
*2
*2
√
√
*2
√
Soiled
back
√
*2
√
√
√
*2
√
*2
Fixing
fault
√
√
Blurring
√
√
Poor
sharp-
ness
√
√
√
√
Component
Cassette pickup roller
Manual feed pickup
roller
Vertical path roller
Registration roller
Primary charging roller
Developing cylinder
Photosensitive drum
Transfer charging roller
Fixing film
Fixing pressure roller
Delivery roller
*1: Approximate; in mm.
*2: Can be caused by dirt from the roller.
T07-301-01
Type of image fault
