CHAPTER 11 TROUBLESHOOTING
COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
11-56
13 The back of the copy is soiled.
YES/NO
NO
YES
YES
NO
Cause
---------------
Transfer
guide assem-
bly
Feeding
assembly
Pickup guide
assembly,
Delivery
roller
Step
1
2
3
Checks
Turn off the power while copy paper is
moving through the feeding assembly.
Is the back of the paper soiled?
Is the transfer guide assembly soiled?
Is the feeding assembly soiled?
Action
Go to step 3.
1. Clean the transfer
guide.
2. Clean the registra-
tion roller.
3. Check the varistor.
4. Check the cartridge
for leakage of toner.
Clean the feeding
assembly.
Clean the pickup guide
assembly and the
delivery roller.
12 The copy has white spots. (horizontal)
YES/NO
YES
YES
Yes
NO
Cause
Copy paper
Scanner rail
Scanning
lamp, Devel-
oping bias
Step
1
2
3
Checks
Is the paper of a recommended type?
Try paper fresh out of package. Is the
problem corrected?
Is the problem noted at the same
position on all copies?
Action
Try a recommend
type. If the results are
good, ask the user to
use a recommended
type.
The paper may be
moist. Instruct the user
on the correct method
of storing paper.
1. Check the scanner
rail for foreign
matter.
2. Adjust the tension
of the scanner cable.
Check the scanning
lamp for flickering
and the presence/
absence of a develop-
ing bias.
Содержание PC800 Series
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