CHAPTER 14 TROUBLESHOOTING
14-50
COPYRIGHT © 1999 CANON INC. CANON imageRUNNER 400/330 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Cause
Scanner drive
cable
Scanner rail
Drum drive
assembly,
Photosensitive
drum
Developing gear
Drum drive
assembly, Drum
unit
Action
Re-route the cable.
Replace the cable
Remove the foreign
matter.
Clean the surface of the
scanner rail with
alcohol; thereafter,
apply a small amount of
lubricant.
Check the drum drive
assembly.
Check the ends of the
drum (area in contact
with the developing
roll) for scratches
and foreign matter.
Check the developing
assembly.
Check the drum drive
assembly.
Replace the drum
unit.
Step
1
2
3
5
Yes/No
YES
NO
YES
YES
NO
Check
Is the cable on the cable pulley
twisted or frayed while the scanner
is moving?
Is there foreign matter on the
mirror pulley assembly?
Move the No. 1 mirror mount
slowly by hand. Does it move
smoothly?
Is the problem noted at intervals of
about 94 mm?
Is the problem noted at intervals of
about 35 mm?
18 The copy is blurry.