Basic HTML Version
Flipper Cabinet Switch Circuit Diagram
LEFT FLIPPER OPTO
SWITCH BOARD
~'6
L_7
,-3
L
-4
Jl
1
2
~
POWER DRIVER BOARD
'6
Gray-Yellow
+12V
§
Jl16
7f--
31- -
OlQ.n~ __
Ground -
- 6
4h
Blue-Gray L. Left Flipper F4 2
1 I
Black-Blue U. Left Flipper F8 5 FLiPTRONIC II
II
BOARD
I
'6H-
J90S
~U
4
Block-Yellow L. Right Flipper F2
1
1
2 Blue-Violet
U. Right Flipper F6 3
~
RIGHT FLIPPER OPTO
SWITCH BOARD
c::~
[ -3
-4
Jl
1
1.
Flipper Cabinet Switches
F2 Lower Right Flipper
F6 Upper Right Flipper
F4 Lower Left Flipper
F8 Upper Left Flipper
FLIPPER OPTO
SWITCH BOARDS
,--------------,
I
FLiPTRONIC II
+5V
+
12V
I
IBOA~D
I
1
I
1
2
r-----+=---'-"-""-"t.....,
~OWE~DRIVEB_ BOAR_ill
1--------,
I
FLIPPER OPTO SWITCH BOARD
1
J1
1-
.,.-""=,--=,,---,-1
--j
Co bi net Swit chi
-.;;S=wi_,_"tc-,-,-h
t-;+--+--:7-t.",.,..,..
Open
Off
1
1
Closed
On
1
1
1
1
4700
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