Outline of the A-4000 motherboard:
serial port
srew
game open
mouse expansion
port power
screw
screw
1 inch Turbo-
hexagon RAM-block CPU-board
scews connector
screws
cable connector
Before the busboard is mounted the cables of the display/switch must be connected to
the motherboard.
The key lock switch with the cable colors red/black is to be connected to the "Key"
connector, the green Power-LED with the cable pair colors green/white is to
be plugged onto the "PWR"
connector, whereby the green
wire is plugged onto the middle
position of the 3 pins. The red
HDD-LED with the cable colors
red/white (or red/black) is to
be plugged onto the "DISK"
connector (see drawing).
red black
KEY
green/white PWR
DISK
(black)/white red
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