Basic HTML Version
FLIPPER CABINET SWITCH CIRCUIT
POWER DRIVER
'6
GRAY-YELLOW +12V
o
Jl16
BOARD
LEFT FLIPPER ~
71-
ORANGE
GROUND
'6
3
FLiPTRONIC II
41-
BLUE-GRAY L. LEFT FLIPPER F4
2
BLACK-BLUE U. LEFT FLIPPER F8
2
BOARD
OPTO BOARD
u
5
J905
RIGHT FLIPPER ~
'6
7f--
31--
4
BLUE-VIOLET L. RIGHT FLIPPER F2
2
1
BLACK-YELLOWU.
RIGHT FLIPPER F6
OPTO BOARD
1 1
u
3
L-
IFLiPTRONIC
11-
1
FLIPPER OPTO BOARDS
I BOARD
J905
I
I
(U4B-7)
3
I
BLACK-YELLOW F6
r--------,
I
I
I
F2 LOWER RIGHT FLIPPER
I
I
BLUE-VIOLET
I
I
F6 UPPER RIGHT FLIPPER
I
(U6B-7)
F2
F4 LOWER LEFT FLIPPER
I
F8 UPPER LEFT FLIPPER
I
I
I
(U4D-11)
2
BLUE-GRAY F4
-
-j
I
I
I
I
(U6D-l1)
I
BLACK-BLUE F8
I
I
5
I
I
ORANGE
I
L__
-=- ____
_j
1---------------1
I
FLiPTRONIC II BOARD +5V
I
I
+12V
I
I
~
I
I
1KO
I
J905 BLUE-XXX
I
BLACK-XXX
I
I
I
I
I
Dedicated Input
I---l-..::..ORc..::.A.:;_:Nc.::,G=-E
__
+-
I
I
L
~ __ ~
10--------1
POWER DRIVER BOARD 6
I
+12V Jl
I
I
2 GRAY-YELLOW
L
~
~ - FLIPPER OPTO BOARD - ~
I
I
I
I
I
I
I
I
I
I
I
4700
The flipper switch circuits operate similar to the dedicated switch circuit. The circuits are active low and
tied to ground through the switch circuit.
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.
3-13
L
.J