Power Supply Unit; A3.3 Power Supply; A3.3.1 Mpw1446 (230V)/Mpw1546 (120V) - Oki OKIOFFICE84 Maintenance Manual

PWU
A3.3

Power Supply Unit

A3.3.1 MPW1446 (230V)/MPW1546 (120V) Circuit Diagram
IMPORTANT:
Oki Data Corporation recommends that maintenance of the Power supply unit (MPW1446
(230V)/MPW1546 (120V)) be performed by replacement of a unit, not by replacement of
components.
Therefore,
1) circuit descriptions in this section are for reference.
2) orders for components of the power supply unit cannot always be accepted.
Functions of unit:
The circuit generates the following direct currents (DC) based on the alternating current,
AC 120 V
AC 230 V
1. Low-voltage power supply circuit
This circuit generates the following voltages.
2. Input ratings
Output Voltage
+5 V
-8 V/+24 V
+26 V
•
•
40672201TH Rev. 4
+6%, -15%
+15%, -14%
Logic circuit supply voltage (IC, LSI), and high-voltage source voltage
CIS (contact image sensor)
Send motor, drum motor and clutch
Voltage : AC 120 V
AC 230 V
Frequency : 50 Hz/60 Hz +/-2%
Output Voltage
+6%, -15% (AC 102 V to 127 V)
+15%, -14% (AC 198 V to 264 V)
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