Power Supply Unit; High-Voltage Power Supply Board - Oki OKIPAGE 6w Maintenance Manual

2.2

Power Supply Unit

The power supply unit supplies +5 V and +26 V to the main control board according to 230 VAC /
Output voltage
The power supply unit also contains a heater drive circuit.
2.3

High-Voltage Power Supply Board

(1) High-Voltage power supply circuit
The high-voltage power supply circuit generates the following voltages required for the
electro-photographic processor from +5 V according to the control sequence from the main
control board. When the cover is open, +5 V supply is automatically interrupted to stop high-
voltage output.
Output
CH
DB
SB
CB
TR
Caution: The TR voltage varies with medium and transfer roller impedance.
+5 V Used to generate a logic circuit and a high voltage.
+26V Used to drive the motor and electromagnetic clutch.
Voltage
–1.3 KV
–265 V/+265 V
–550 V/ 0 V
+400 V/–1.35 KV
+500 V ~ +3.5 KV/–750 V
Application
Application
Voltage to be applied to a charge roller.
Voltage to be applied to a developing roller.
Voltage to be applied to a sponge roller.
Voltage to be applied to a cleaning roller.
Voltage to be applied to a transfer roller.
2 - 4
Remarks
P2H-PCB
P2H-PCB
P2H-PCB
P6L-PCB
P2H-PCB