Page 104 - Attack From Mars

LED P.C.B. Assembly (transmitter)
A-16908
WHT
Gray Black m I
I K OA
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solder side schematic component side
Photo Transistor P.C.B. Assembly (receiver)
A-16909
BLK Blue
o
Gray-Yellow Oro~ge-XXX
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solder- side schematic component side
3-14