Basic HTML Version
Flipper Cabinet Switch Circuit Diagram
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--4
RIGHT FLIPPER OPTO SWITCH J1 21
BOARD
POWER DRIVER BOARD
LEFT FLIPPER OPTO SWITCH
BOARD
FLiPTRONIC "
BOARD
J905
Flipper Cabinet Switches
F2 Lower Right Flipper
Fe
Upper Right Flipper
F4 Lower Left Flipper
F8 Upper Left Flipper
,.------------,
I
FLiPTRONIC"
I
BOARD
FLIPPER OPTO
SWITCH BOARDS
r------------------------,
I
FLiPTRONIC II
I
I
BOARD
:FL";PER OPTO
SWI'TCH -BOARD:
Cabinet Switch
SWitch A
H Off
L On
B
Open H
Closed L
POWER DRIVER BOARD
I
The flipper switch circuits operate similar to the dedicated switch circuit. The circuits are active low and tied to ground
through the switch.
When a switch closes the row side (dedicated input) of the circuit activates. The "+" input to the LM339 drops below +5V
therefore its output is low. Since the row (dedicated input) circuit is tied directly to ground through the SWitch, the switch
is considered closed by the microprocessor. When the switch opens, the
"+"
input to the LM339 is above +5V, its output
.._,__-
is high and the row (dedicated input) is inactive.
Twilight Zone 3-27