The Output Is Soiled - Canon iR1200 Series Service Manual

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
NO:
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.
7-30
COPYRIGHT © 2002 CANON INC.
the photosensitive drum, replace the drum unit.)
If the problem is not corrected, replace it.
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- Image
*1
eter fault White
interval *1 spot
38.0 -
32.0 -
14.3 44.9
13.9 43.8
12.0 37.3
16.0 42.0
30.0 93.3
14.6 43.7
24.0 75.4
20.4 64.1
12.4 39.0
T07-301-01
2000 2000 2000 2000
Type of image fault
Soiling Soiled
back
√
√
*2
√
*2
√
*2
√
√ √
√ √
√
*2
√
*2
√
*2
CANON iR1200/iR1300 Series REV. 0 AUG. 2002
Fixing Blurring Poor
fault sharp-
ness
√
√
√
√
√
√
√
√