Oki OKIOFFICE 84 Service Manual page 398

A3.1.9 R51 Circuit Diagram (Page 9/12)
1. Block diagram
The circuit diagram shown on page 9/12 consists of the following function and connectors:
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TA1 (Send motor driver)
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TR508/TR507 (Clutch driver)
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Connector CN1 that provides an interface between R51 board and the send motor.
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Connector CN2 that provides an interface between R51 board and the clutch.
Figure A3.1.11 shows the related signals of the send motor and clutch.
2. Function
1) Send motor rotation and chopper control
Send motor drive signals are generated by the IEXSEED300 and output to send motor via IC7 (motor drive IC) of
this circuit.
Note:
The built-in motor control circuit of IEXSEED300 consists of the following blocks:
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Setting of the excitation operation
Service Guide OKIOFFICE 84
Chapter A Board Descriptions
Page: 237