Canon iR8500 Service Manual page 170

The construction of the control system related to the developing assembly drive mecha-
nisms is following:
J516B
J504B
14
HM(-)
13
HM(+)
12
11
MGR-CL-ON
8
24VU
7
1
J512A
1
24VU
11
DEV-CL-ON
12
13
14
Main motor
J514B
1
2
0V
3
MM-FG
4
MM-ON
5
5V
6
0V
7
14
J516B
1
2
3
4
24VU
11
DEV-CL-ON
12
COPYRIGHT© 2001 CANON INC.
J302
Environment
sensor PCB
When '0', the clutch goes ON.
Magnet roller drive clutch
When '0', the clutch goes ON.
Developing cylinder
Developing cylinder
clutch
M1
2000 2000 2000 2000
CHAPTER 2 NEW FUNCTIONS
Hopper inside
toner feed motor
M18
CL1
CL4
CL20
Developing cylinder
Deceleration clutch
F02-708-02
CANON iR8500/7200 REV.1 AUG. 2001
Toner feed screw
Magnet roller
Toner stirring screw
2-115