Basic HTML Version
FLIPPER COil CIRCUITS
LEFT FLIPPER CIRCUIT
RIGHT FLIPPER CIRCUIT
PLAYFIELD
POWER DRIVER BOARD
POWER DRIVER BOARD
J112~ YEllOW-GREEN POWER
~?GW~R
I-0""RAN=GE=--.::;GR",EEN:::..:___,H""O""LD'---I--+-+-',UPPER
LOWER
LEFT
1--'----'-::...:.;=----""""'--+-+---+----'
,LIPPER
ORANGE-VIOLET HOLO
YELLOW-VIOLET POWER
CPU BOARD
Jl02
CPU BOARD
J211
J212
GROUND
F"2 LOWER
,6
UPPER
J20B
Jl02
:
~7
RIGHT CABINET
~__:;.;;....;;__-+-BL_UE_-_V1_OLET_-I ~ ~ OPTO BOARD
BLACK-YELLOW
i ~
JI
ORANGE
J211
J21Z
GROUND ORANGE
6 ~ 7 LEFT CABINET
1-'_4.....::.;:L.O-,,-WE:::..R;__+-B:c:;L.:..;UE:,_-_GRA_Y--j
~ OPTO BOARD
,5 UPPER
BLACK-BLUE
2 JI
LOWER LEFT
t-t""==--+-'
E.O.S. SWITCH
LOWER RIGHT
E.0.5. SWITCH
UPPER RIGHT
E.O.S. SWITCH
FLIPPER END-OF-STROKE SWITCH CIRCUIT
1------------------1
Dedicated Input
I
+5V
+12V
I
I
?
r
I
I
1K
I
I
I
I
j-:-I
___:B;;..:LA:....;C.:c_K_;_-_X_X""x
I
I
I
I
I
I
I
CPU BOARD
I
I
I
I
L
~
OPEN H
SWITCH A
CLOSED L
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), 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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