Drv Board (713-5001) - Hitachi 902 Service Manual

10.7 DRV Board
(1) Explanation of Circuit Board
The DRV board drives the stepping motor at a constant current/voltage and the solenoid
valve. The SSR control signal from the EMOT100 board is connected to the ACDIST
board via this board.
5 V and 24 V DC voltages are supplied to each unit in the instrument from the power unit
via this board.
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