Benchmark Games Monster Drop Chaos, Manual

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Hard drive Part # 500PCB115
QTY: 1
Location: On the PCB panel that is inside the
lower cabinet on the right side.
Sends and receives signals to and from
switches all over the game, while driving the
programs on the display screen.
VII. Opto Sensor (Horseshoe Opto)
Part#: PCB0078
QTY: 1
Location: Under the wheel in the playfield.
The Horseshoe Opto is acting as a position marker for
the wheel.
VIII. Opto Sensor (Transmitter)
Part#: PCB00029
QTY: 4
Location: two on the ball drop assembly, one on the Chaos
loading tunnel, one on the ball return chute under the
playfield.
The transmitter will send an IR signal across a pathway to a receiver, when the signal is block
by a ball, the game will be able to count how many balls have passed.
IX. Opto Sensor (Receiver)
Part#: PCB00025
QTY: 4
Location: two on the ball drop assembly, one on the Chaos
loading tunnel, one on the ball return chute under the
playfield.
The Receiver sits opposite of the Transmitter and when the IR
signal is disturbed, it sends a signal to the PC.