Canon IMAGERUNNER 7095 PRINTER, Руководство по обслуживанию

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Chapter 7
7-22
7.7.4 Controlling the Developing Bias
0010-8065
The following items are associated with the developing bias control system:
[1] DC bias constant voltage control
[2] AC bias constant voltage control
F-7-29
DC controller PCB
J510A J723
J721
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4
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11
12
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16
17
18
1
2
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11
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0 V
24 VH 24 VH
HVDC_REMOTE
DEV_DC_CNTR
DEV_AC_ON
GND
GND
1 2 3 4
Relay PCB
Developing cylinder
J732
Voltage input between 0 and 12 V,
used to control the voltage level
of the developing DC bias.
500V
Image area
Non-image
area
The developing DC bias varies as follows
according to the potential of DEV_DC_CNTR:
3V
11V 12V
DEV_DC_CNTR
De
v
eloping DC bias
AC output: 1200 Vpp
When '1', high-voltage
output is ready.
When '1', the developing
AC bias is generated.
2
1
17
18
High-voltage DC PCB