Basic HTML Version
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Flipper Cabinet Switch Circuit Diagram
c=~
,- -3
L
-4
LEFT FLIPPER OPTO
SWITCH BOARD
J 1
RIGHT FLIPPER OPTO
SWITCH BOARD
c=~
1-
3
L -4
J
1 1
cl
POWER DRIVER BOARD
'6
Gray-Yellow +12V
II
J116
71---
31- -
Oranill2_ __
Ground -
- 6
40
Blue-Gray L. Left Flipper F
4
2
1 I
Black-Blue U. Left Flipper F8 5 FLiPTRONIC II
~
I
BOARD
I
6r+
J905
~~
4
Black-Yellow L. Riqht Flipper F2
1
1 Blue-Violet
U. Riqht Flipper F6
1-
3
1
2
-
Flipper Cabinet Switches
FLIPPER OPTO
SWITCH BOARDS
F2 Lower Right Flipper
F6 Upper Right Flipper
F4 Lower Left Flipper
F8 Upper Left Flipper
,------------1
I
FLlPTRJ)NIC II
+5V
+
12V
I BOARD
I
I
I
I
,------,
I
FLIPPER OPTO SWITCH BOARD
I
J
1
I
Cabinet Switch
I
1---""""'--'=--'---1
I
I
I
I
I
I
Off
On
Switch
Open
Closed
4700
2 1----+""-"L--'-"-"=4--j
LeOWEILDRIVEE._ BOARm
L
_j
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 u+" 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 u+" input to the LM339 is about +5V, its output is high and the row (dedicated input) is inactive.
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