Basic HTML Version
FLIPPER CABINET SWITCH CIRCUIT
POWER DRIVER
~
'6
GRAY-YELLOW +12V
~ J116
BOARD
71-
ORANGE
GROUND
(3
3
FLiPTRONIC II
LEFT FLIPPER
41-
BLUE-GRAY L. LEFT FLIPPER F4
2
2
BOARD
OPTO BOARD
c.l
BLACK-BLUE U. LEFT FLIPPER F8 5
J905
FLiPPER~
'6
I-
7
3f--
RIGHT
4
BLUE-VIOLET L. RIGHT FLIPPER F2
2
1
BLACK-YELLOWU.
RIGHT FLIPPER F6
OPTO BOARD
1
c.l
3
L_
(U4B-7)
3
I
BLACK-YELLOW F6
F2 LOWER RIGHT FLIPPER
I
BLUE-VIOLET
F6 UPPER RIGHT FLIPPER
(U6B-7)
F2
F4 LOWER LEFT FLIPPER
F8 UPPER LEFT FLIPPER
(U4D-11 )
BLUE-GRAY
F4
2
I
(U6D-11 )
5
I
BLACK-BLUE F8
I
ORANGE
L __
----=- ____
_j
IFLiPTRONIC
11-'
BOARD
J905
I
FLIPPER OPTO BOARDS
1-------------
I
FLiPTRONIC II BOARD +5V
I
I
I
I
I
I
I
I
Dedicated Input
lPowER DRIVER-BOARD -
I
I
+12V J116
I
I
2 GRAY-YELLOW
L
~
,----------,
I
FLIPPER OPTO BOARD
I
I
J 1
I
~=:_::::';_:_~:_:__--l---I
X
I
I
I
I
I
I
I
I
I
ORANGE
L______
_
~ __ ~
4700
6
(._--IVVv---
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 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