The Output Has Left/Right Displacement; The Output Has A Blurry Image - Canon SmartBase PC1200s Service Manual

CHAPTER 7 TROUBLESHOOTING

3.1.16 The output has left/right displacement.

Original
1) Is the original placed correctly?
NO:
Paper
2) Is the paper curled appreciably?
YES: Replace the paper.
Stack
3) Is the amount of paper placed in the cassette more than allowed?
YES: Advise the user on the limit imposed on the amount of paper.
Left/right edge read start position adjustment, DC controller PCB
4) Execute left/right edge read start position adjustment. Is the prob-
YES: End.
NO:

3.1.17 The output has a blurry image.

General conditions
1) Execute 'PRINT test'. Is the output image normal? (See 3.21.5 of
YES: Go through steps 4) and 5).
NO:
Transfer charging roller, Photosensitive drum
2) Is the problem noted at specific intervals?
YES: Identify the cause by referring to T07-301-1, and replace it. (If the
Laser scanner unit, DC controller PCB
3) Try replacing the laser scanner unit. Is the problem corrected?
YES: End.
NO:
Contact sensor drive belt
4) Is the contact sensor drive belt normal?
NO:
Contact sensor drive rail, reader motor
5) Move the contact sensor slowly. Does it move smoothly?
YES: Replace the reader motor.
NO:
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COPYRIGHT © 2001 CANON INC.
Place it correctly.
lem corrected? (See 1.2.4.3 of Chapter 7.)
Replace the DC controller PCB.
Chapter 2.)
Go through steps 2) and 3).
photosensitive drum is the case, replace the cartridge.)
If the problem cannot be corrected, check its drive system (e.g.,
gears).
Replace the DC controller PCB.
Replace the contact sensor drive belt.
Check the surface of the contact sensor drive rail for foreign mat-
ter; if there is any, remove it. If it is soiled, clean it with alcohol,
and then apply a small amount of lubricant.
2000 2000 2000 2000 CANON SmartBase PC1200s/iR1200s REV. 0 DEC. 2001