Basic HTML Version
fLIPPER COIL CIRCUITS
LEFT FLIPPER CIRCUIT
RIGHT FLIPPER CIRCUIT
POWER DRIVER BOARD
POWER DRIVER BOARD
LOWER
RIGHT
f-"'="'-"'-'= _:__- ""'''--+-t-+ --__.J
FLIPPER
J120
YELLOW-BLUE
LOWER
POWER
9
ORANGE-BLUE
LEfT
HOLD
fLIPPER
YELLOW-GRAY
POWER
QRA.NGE-GRAY
HOLD
J102
J102
GROUND
ORANGE
CPU BOARD
6
~-~~~'"
GROUND
ORANGE
F.
LOWER
BLUE-GRAY
OPTO BOARD
•
Fa UPPER
BLACK-BLUE
1
1
J21 1
J212
'2 LOWER
BLUE-VIOLET
F6 UPPER
BLACK-YELLOW
UPPER LEFT
LO.S.
SWITCH
LOWER RIGHT
E.O.S.
SWITCH
LOWER LEFT
f..-"'=""'---t---J
£.0.5.
SWITCH
UPPER RIGHT
LO.S.
SWITCH
fLIPPER END-Of-STROKE SWITCH CIRCUIT
1- - ----------
- -- --- 1
I
Dedicate d Input
I
+5V
r+
12V
I
,..- __
_'
I
I
1 K
I
I
J208
I
I
X
I
I
~I -----~
I
LM.339
4 70pf
T
I
I
I
:
CPU BOA R0
HI--=o'-"RA-"-'-N~GE~
_
I
I
L
~
SWITCH A B
OPEN H HOFF
CLOSED L L ON
BLACK--XXX
PLAYFIELD
The flipper E.O.S. 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 of 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.
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