Canon GP335 Service Manual page 452

CHAPTER 14 TROUBLESHOOTING
5. Checking the Developing Assembly
a. Check to make sure that the rolls on both
ends of the developing assembly are in
contact with the drum.
b. Check to make sure that the surface of the
developing cylinder is coated with an
even layer of toner.
6. Checking the Paper
a. Check the paper to see if it Canon-
recommended paper.
b. Check to see if the paper is moist.
Try fresh copy paper.
7. Checking the Periodically Replaced
Parts
Replace any part that has reached the end
of its life by referring to the Scheduled
Servicing Chart and the Periodically Replaced
Parts Table.
8. Others
In winter, bringing a machine from a cold
to warm room can cause condensation inside
it, leading to various problems.
a. Condensation on the scanner (glass,
mirror, lens) can cause the images to be
lighter.
b. Condensation on a charging assembly can
cause leakage.
c. Condensation on the pick-up/feeding
guide can cause feeding faults.
If condensation is noted, dry wipe the part
or leave the machine alone for 60 min.
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COPYRIGHT © 1999 CANON INC. CANON 405/335 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Note:
If the copies are uneven in density
(between front and rear), too light, or
foggy, try the Image Adjustment Basic
Procedure first.