Canon 7086 Series Service Manual - page 260
of
735
Chapter 7
7-14
F-7-19
7.5.3 Pre-Transfer Charging Mechanism
7.5.3.1 Outline
0010-8054
iR7105 / iR7095 / iR7086
The following items are associated with the pre-transfer charging control system:
[1] DC bias constant current control
[2] AC bias constant voltage control
[3] output control suited to environment (fuzzy control)
The following shows the components related to the pre-transfer charging control system:
DC controller PCB
High-voltage PCB
J510A
DC 285V
J723
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
0 V
24 VH
24 VH
HVDC-REMOTE
GND
GND
1 2 3 4
Relay PCB
Dust-collecting roller
J732
1
2
3
When '1', high-voltage output is ready.
When '1', the dust-collecting
roller bias goes on.
17
18
18
17
J721