Locking The Developing Assembly - Canon CLC 1120 Service Manual

B. Locking the Developing Assembly
When the developing assembly locking motor (PM1 through PM4) turns on, the developing
assembly locking cam starts to rotate to lock the developing assembly to the photosensitive drum.
Figure 6-402 shows the cyan developing assembly in its locked state.
When making a 4-color copy, locking will be M, C, Y, and Bk in sequence.
Item
Developing assembly locking motor
(PM1, PM2, PM3, PM4)
Developing assembly HP sensor
(PS49, PS51, PS53, PS55)
Developing assembly
locking cam
COPYRIGHT © 1999 CANON INC.
Pulse motor; locks and unlocks each developing
assembly.
Photointerrupters; the home position is where the
developing assembly is in its unlocked state.
Table 6-401
Photosensitive
drum
Bk
PS49
PS55
PM4
Developing assembly locking driver PCB
Figure 6-402
CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 6 IMAGE FORMATION SYSTEM
Description
Y
C
PS51
M
PM2
PM1
DC driver PCB
Locking spring
PS53
PM3
6-29