Canon CLC 1120 Service Manual page 604

· Details of Horizontal Lines
No. Color/location (A3)
1 All colors, entire surface
2 M:
· Near 160 mm from the
leading edge and
thereafter
· Near 105 mm from the
leading edge and
thereafter
C:
· Near 105 mm from the
leading edge and
thereafter
· Near 50 mm from the
leading edge and
thereafter
Y:
· Near 50 mm from the
leading edge and
thereafter
· Near 50 mm from the
leading edge and
thereafter
Bk:
· Near 150 mm from the
leading edge and
thereafter
· Near 150 mm from the
leading edge and
thereafter
3 Specific color, entire
surface
COPYRIGHT © 1999 CANON INC.
Interval
(mm)
0.5 The mirror or the like may
be rocked by vibration of
the laser scanner motor. The
reflecting plate of the
polygon mirror may be
soiled or scratched.
0.9 The impact of the following
is transmitted to the drum
and bending mirror:
· When the butting rolls of
the developing assembly
come into contact with
the butting block.
· When the developing
clutch turns on.
42.8 The developing cylinder has
scratches, or the developing
cylinder drive gear has a
fault.
CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 13 TROUBLESHOOTING
Cause
Check to see if the bending
mirror assembly is mounted
properly.
· Check the rubber dampers
on both ends of the mirror
holder.
· Check to see if the mirror
retaining spring is set
properly.
If no error is found, replace
the laser scanner unit.
· Replace the rubber
dampers on both ends of
the mirror holder.
· Check to see if the mirror
retaining spring is
mounted properly.
· Tighten the fixing screw
and the stepped screw of
the photosensitive drum
unit fully.
· Tighten the mounting
screws on the developing
drive unit and the support
plate of the copier rear
side plate.
· Check the gap between
the butting roll and the
butting plate (a of the
following):
· Check the developing
cylinder for scratches and
fault.
· Clean the teeth of the
developing cylinder drive
gear.
Action
a (mm)
M 5.5 ± 1.0
C 6.5 ± 1.0
Y 5.0 ± 1.0
Bk 5.5 ± 1.0
13-77