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Operation Description
2 - 8
OKIPAGE 6e/6ex
Service Manual, P/N 59276401
2.4
Power Supply Board
The power supply board consists of an AC filter circuit, a low voltage power supply circuit, a high voltage
power supply circuit, heater drive circuit, and photosensors.
Low Voltage Power Supply Circuit
This circuit generates the following voltages.
Output Voltage
Use
+5 V
Logic circuit supply voltage
+30 V
Motor and fan drive voltage and source voltage for high-voltage supply
+8 V
Analog supply voltage
–8 V
PS board and analog circuit supply voltage
High Voltage Power Supply Circuit
This circuit generates following voltages required for electrophotographic process from +5 V, according
to the control sequence from the control board. When cover open state is detected, +5 V supply is
interrupted automatically to stop the supply of all high-voltage outputs.
Output
Voltage
Use
Remarks
CH
-1.35 KV
Voltage applied to charging roller
DB
-300 V/+300 V
Voltage applied to developing roller
SB
-450 V/ 0 V
Voltage applied to toner supply roller
TR
+500 V to +4 KV/-750 V
Voltage applied to transfer roller
Variable
CB
+400 V
Voltage applied to clearing roller
Photosensor
The photosensor mounted on this power supply board monitors the paper running state during printing.
Содержание OKIPAGE 6e
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Страница 147: ...Wiring Diagrams 7 4 OKIPAGE 6e 6ex Service Manual P N 59276401 Power Supply Board 26 25 1 2...
Страница 159: ...Wiring Diagrams 7 16 OKIPAGE 6e 6ex Service Manual P N 59276401 Option RAM Board LQME PCB...
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Страница 232: ...Multi Purpose Feeder E 15 OKIPAGE 6e 6ex Service Manual P N 59276401 OEL INT 1...
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