Basic HTML Version
LEFT FLIPPER OPTO
SWITCH BOARD
Flipper Cabinet Switch Circuit Diagram
RIGHT FLIPPER OPTO
SWITCH BOARD
c=~
,-3
L -4
Jl
1
1.
LEFT FLIPPER OPTO
SWITCH BOARD
r==~
,-3
L_
-4
Jl
1
2
'-
RIGHT FLIPPER OPTO
SWITCH BOARD
c=~
,-3
L -4
Jl
1
1.
POWER DRIVER BOARD
6"
Gray-Yellow +12V
~ Jl16
7e--
3r - Oranill!_ __
Ground -
- 6
4h
Blue-Gray L. Left Flipper F4 2
1
I
Block-Blue U. Left Flipper F8 5 FLiPTR ONIC II
~I
BOARD
I
6+
J905
~_j
4
Black-Yellow L. Riqht Flipper F2
1
1
2 Blue-Violet
U. Riaht Flipper F6 3
'-
Flipper Cabinet Switches
POWER DRIVER BOARD
6"
Groy- Yellow +12V
~ Jl16
71---
3f- - Oranill!_ __
Ground -
- 6
4n
\
Blue-Gray L. Left Flipper F4 2
1
I
Block-Blue U. Left Flipper F8 5 FLiPT RONIC II
~I
BOARD
I
6r+-
J905
~U
4
Block-Yellow L. Riqht Flipper F2
1
1
1.
Blue-Violet
U. Riqht Flipper F6
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 about +5V, its output is high and the row (dedicated input) is inactive.
3-15