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COPYRIGHT © 2001 CANON INC. CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
7. TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
50
Abnormal noise is heard.
Cause
Scanner system
Drum motor
drive system
Fan
Developing
motor drive
system
Pick-up motor
drive system
Fixing motor
drive system
Transfer unit
drive system
Waste toner
feeding drive
system
Holding tray
drive system
Step
1
2
3
4
5
6
7
8
9
Checks
Is the noise from the scanning
system?
Is the noise from the drum unit?
Is the noise from the fan?
Is the noise heard when only the
developing motor is rotating?
(Note 1)
Is the noise heard when paper is
picked up?
Is it from the fixing assembly?
Is it from the transfer unit?
Is it from the waste toner feeding
system?
Is it from the holding tray unit?
Yes/No
YES
YES
YES
YES
YES
YES
YES
YES
YES
Action
Check the scanner motor,
belt, cable, pulley, and
rail. Check the mirror
mount for an object that
may come into contact.
Check the drum motor
drive system (drum motor,
gear, photosensitive
drum, flywheel).
Check the fan.
Check the developing
motor drive system.
Check the reciprocating
operation of the develop-
ing assembly, cleaning
screw, and cleaning
blade.
Check the pick-up toner
system and the hopper
motor drive system.
Check the fixing motor
drive system.
Check the transfer unit
drive system.
Check the waste toner
feeding system.
Check the holding tray
drive system.
Note 1: When the noise is heard, do the following.
• If the problem is the cleaning blade, it is not clear which station is suffering from a strange noise.
Make 10 solid copies using each color. If the problem is not corrected, dispose of the waste toner,
and put 5 g of drum cleaner lubricating agent (FG2-1694) into the cleaning assembly.
• If the problem is the side scraper, replace the side scraper, and put a small amount of drum cleaning
lubricant to the tip of the side scraper.
• If the problem is the side seal, clean the felt surface, and remove the drum cleaner.
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