Basic HTML Version
FLIPPER COIL CIRCUITS
LEFT FLIPPER CIRCUIT
RIGHT FLIPPER CIRCUIT
POWER DRIVER BOARD
POWER DRIVER BOARD
LOWER
RICHl
I-"'=="""':__-""""'---t~t-.__...-J
FLIPPER
LOWER
LEFT
J -- - -~-- . :="---t-r_i---,
FLIPPER
CPU BOARD
Jl02
CPU BOARD
J211
J212
GROUND
r2
LOWER
F6
U PP E R
J20B
Jl02
GROUND ORANGE
6
W
7
7
LEFT CABINET
r.
LOWER SLUE-GRAY
J
3 OPTO BOARD
r-F8-UP-P-ER-t-S-LA -C -K- -B-LU-E--I
~
i
2
2 J1
ORANGE
6
W
1-----=.:=-" '-+- - - - - -1 77
RIGHT CABINET
f-:..=......:::::::.:: .:__-+-BL_UE_-_Vl_OL_ET--{
~
~
OPlO BOARD
BLACK-YELLOW ~
i
JI
J211
J212
UPPER LEFT
E.O.S. SWITCH
LOWER RIGHT
E.O.S. SWITCH
LOWER LEFT
I-."-=""----+_'
E.O.S. SWITCH
UPPER RIGHT
E.O.S. SWITCH
FLIPPER END-OF-STROKE SWITCH CIRCUIT
1----- - ----- - ----- - 1
Dedica ted Input
II
+
5V
r
+
1 2V
II
_,S",-,W::,-,::
IT, _,C,-,-H-'--t-"A-' --I-""+
__
OPEN H
ORANGE
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),
ot
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.
3-12