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Service Guide OL810e
Chapter 2 Operation Description
2.2 Power Supply/Sensor Boar
The power supply/sensor board consists of an AC filter circuit, a low voltage power supply circuit, a high
voltage power supply circuit, heater drive circuit, and photosensors.
(1) 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
RS-232C line voltage
+8 V
RS-232C line voltage and PS board supply voltage
+3.3V
LED head supply voltage
(2) High Voltage Power Supply Circuit
This circuit generates the following voltages required for electrophotographic process from +5 V,
according to the control sequence from the main 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
(3) Photosensor
The photosensor mounted on this power supply/sensor board monitors the status of paper being fed
through the printer during printing.
The sensor layout diagram is shown in Figure 2-2.
Summary of Contents for OL810e
Page 12: ...4 Universal Paper Cassette 5 High Capacity Second Paper Feeder 6 Power Envelope Feeder...
Page 20: ......
Page 52: ...Base unit...
Page 65: ...Partner Exchange BPX for any updates to this material http bpx okidata com...
Page 131: ...Page 68 Service Guide OL810e Chapter 6 Troubleshooting...
Page 134: ...Page 70 Service Guide OL810e Chapter 6 Troubleshooting 2 2 Paper feed jam...
Page 149: ...Page 84 Service Guide OL810e Chapter 6 Troubleshooting 8 White vertical belts or streaks...
Page 150: ......
Page 167: ...Page 99 Service Guide OL810e Chapter 7 Wiring Diagrams 7 3 Resistance Check...
Page 180: ...Page 106 Service Guide OL810e Chapter A RS 232 Interface Interface Parameter Setting...
Page 181: ......
Page 184: ...Connector pin arrangement 4 Signal Level LOW 0 V to 0 8 V HIGH 2 4 V to 5 0 V 5 Specifications...
Page 228: ...Paper Inlet Jam...