Controlling The Output To Suit The Environment (Fuzzy Control) - Canon iR7086 Series Service Manual

When '1', high-voltage DC
output is ready.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
If the current is too high
or too low, '1'.
Voltage input of between 0 and 12 V.
Uses this voltage to control the current value of the pre-transfer bias.

7.5.3.2 Controlling the Output to Suit the Environment (fuzzy control)

iR7105 / iR7095 / iR7086
The pre-transfer charging current is optimized to suit the environment (as determined based on the readings of the environment sensor).
Related Service Mode Item:
- COPIER> OPTION> BODY> FUZZY (enabling/disabling fuzzy control)
Relay PCB
J723
J510A
18
17
0 V
16
HVDC_REMOTE
15
14
13
When '1', the high-voltage
12
AC output is ready.
11
10
9
8
HVAC_ON
7
POST_DC_CNTR
6
5
POST/SEP_ERR
4
3
2
1
165 A
Low humidity
The current value of the pre-transfer bias varies as
follows according to the potential of PTDC-CNT:
J721
1 2 3 4
J734
5
4
3
2
1
1 1
HVAC_ON
2 2
24VP
3 3
GND
4 4
GND
5 5
J741
J722
When '1', high-voltage
AC output is ON.
F-7-20
High humidity
F-7-21
300 A
3V
11V 12V
POST_DC_CNT
Pre-transfer charging wire
AC+DC
J742
AC output: 7.0 to 9.0 kVpp
Chapter 7
0010-8055
7-15