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9-3.
System Control System
9-3-1.
SY-408 Board
The SY-408 board consists of a CPU (IC1001) and peripheral devices that provide an interface circuit, synchronizing
separator circuit, video amplifier circuit, and audio circuit.
9-3-2.
AT-189 Board
This board consists of a system control microcomputer (IC200) and a peripheral circuit necessary for the operation of
IC200.
The main program is written in the flash memory (IC401) on the AT-189 board.
9-3-3.
MB-1214 Board
The MB-1214 board is the motherboard of this unit. This board contains interface connectors to be connected to other
boards, inductors for power filters on each board, capacitors, and positive thermistors (overcurrent protection device).
HDC4300
9-3
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