Power Unit - Oki C9600 Service Manual

2.3

Power Unit

This is a high voltage power unit consisting of high voltage power source circuit and a low voltage
power unit composed of a power unit consists of an AC filter circuit, low voltage power source circuit
and heater drive circuit.
(1) Low Voltage Power Unit
This circuit generates the following voltage.
Output Voltage
+5V (1)
+5V (2)
+5V (3)
+24V
(2) High Voltage Power Unit
This circuit generates the following voltage that is more powerful than +24V necessary for
the electrophotographic process, according to the control sequence from the control PCB.
Output
CH
DB
SB
BB
TR
42930511TH Rev. 2
PU, Logic Circuit Power Source
LED Head
CU
For Monitor Drive
Voltage
-0.8 to -1.4kV
-100 to -450V/250V
-300 to -700V
Drop from SB Output with Zener
0 to 7kV
Purpose
Purpose
Power to Electrification Roller
Power to Development Roller
Power to Toner Supply Roller
Power to Development Blade
Power to Transfer Roller
Oki Data CONFIDENTIAL
Remarks
26 /