Canon CLC 1120 Service Manual page 676

53 The copier generates abnormal noise.
Cause
Original exposure
system
Drum motor drive
system
Fan
Main motor drive
system
Pickup motor
drive system
Fixing motor
drive system
Hopper motor
drive system
Transfer drum
cleaner locking
motor drive
system
Attraction roll unit
Note: If abnormal noise is heard, perform the following:
1. If it is from the cleaning blade, make 10 solid copies using black only. If the problem cannot be
corrected, dispose of the waste toner, and apply drum cleaner lubricant (FG2-1694) to the cleaning
blade.
2. If it is from the side scraper, replace the side scraper, and apply a small amount of drum cleaner
lubricant to the edge of the side scraper.
3. If it is from the side seal, clean the surface of the felt, and remove the drum cleaner lubricant.
COPYRIGHT © 1999 CANON INC.
Step Checks
1 Is the noise coming from the
original exposure system?
2 Is the noise coming from the drum
unit?
3 Is the noise coming from a fan?
4 Is the noise heard only when the
main motor is rotating? (Note 1)
5 Is the noise heard when copy paper
is picked up?
6 Is the noise heard from the fixing
system?
7 Is the noise coming from the
hopper unit?
8 Is the noise heard from the transfer
drum?
9 Is the noise heard from the
attraction roller unit?
CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 13 TROUBLESHOOTING
Yes/No
YES Check to see if there is
an object which comes
into contact with the
original scanner motor,
belt, cable, pulley, or
rail.
YES Check the drum motor
drive system (drum
motor, gear,
photosensitive drum,
transfer drum gear
engagement, flywheel).
YES Check the fan.
YES Check the main motor
drive system
(developing assembly
drive system, waste
toner collection drive
system, registration
roller assembly).
Check the
photosensitive drum
cleaning blade, side
scraper, and side seal.
YES Check the pickup motor
drive system.
YES Check the fixing motor
drive system.
YES Check the hopper motor
drive system.
YES Check the transfer drum
cleaner locking motor
drive system.
YES Check the spring, gear,
and attraction scraper.
Action
13-149