Basic HTML Version
Elieper cabinet Switch Circuit Diagram
POWER DRIVER BOARD
LEFT FUPPER OPTO
ASSEMBLY
RIGHT FUPPER OPTO
ASSEMBLY
Fljpper cabinet SWitches
F2 Lower Right Flipper
F6 Upper Right Flipper
F4 Lower Left Flipper
Fe
Upper Left Ripper
r - - - - - - - - - - -
-I
, FUPTRONIC II
J905 ,
, BOARD
FUPPEROPTO
ASSEMBUES
r - - - - - - - - - - - - - - - - .• - - - - - --,
, FUPTRONIC II
+5V
, BOARD
0
,- - - - - - - - - - - - - - - - I
,
FUPPER OPTO ASSEMBLY
I
: Blue-xxx
J1
Cabinet Switch
,Black-xxx'
, Orange
Dedicated Input
I
-
- - - - - - - - - - - - - - - - = - - - - - - - ~
470'1
POWER DRIVER BOARD
I
Switch A B
Open H
Closed
l
H Off
l
On
The flipper switch 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 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.
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