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Service Guide OKIPAGE6e
Chapter 2 Operation Description
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 seque
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.
Sensor Layout Diagram (Figure 2-3)
Содержание Okipage6e
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Страница 11: ...4 High Capacity Second Paper Feeder 5 Multi Purpose Feeder...
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