Basic HTML Version
SWITCHES
Dedicated
Grounded
Swltchee
Orange-8rown (1)
J205-1
Lett Coin Chute 01
Orange-Red
(2)
J205-2
Center Coin
Chute
Orange-Black
J205-3
White
o--Green
~
1
2
3
4
5
6
7
8
Green-
Green-
Green-
Green-
Green-
Green-
Green-
Green-
Brown
Red
Orange
Yellow
Black
Blue
Violet
Gray
J207-1
J207-2
J207-3
J207-4
J207-5 J207-6
J207-7
J207-11
w
U20-18
U20-17
U20-16 U20-15
U20-14 U20-13
U20-12
U20-11
1 Whlte-
Lett Fire
Slam Buy-In Right Ball
Lett
Globe
Magnet
Trough
Brown
Button
Ti~
(Extra Ball)
Shooter
Sling
POSition
Over
1
J209-1
(2)
'1
I'
Ring
U1S-tt
11
21
31
41
51
61
71
81
2 Whlte-
Right Fire Front Door
Not
Right
Right
Crane
Top
Trough
Red
Button
Closed
Used
Oullane
Sling
Exit
Right
2
J209-2
(2)
Opto
Ut8-11
12
22
32
42
52
62
72
82
3 White-
Credit
Ticket
Lett
Outside
Captive
Lett
Left
Trough
Orange (Start)
Dispenser
Rollover
Right
Ball 2
Ramp To Popper
3
J209-3
Return
Lock
Ut8-5
13
23
33
43
53
63
73
83
4 White-
Plumb Bob Always
Inside
Super
Drop
Lett
Right
Trough
Yellow
Tilt
Closed
Right
Game Target "J"
Ramp
Popper
4
J209-4
Return
Exit
Ut8-7
14
24
34
44
54
64
74
84
5 Whlte-
Left
Top Right
Top Cent9f
Not
Drop
Not
Top
Trough
Green
Shoot
Post
Rollover
Used Target "U"
Used
Ramp
5
J209-5
Lane
Exit
Utll-tt
15
25
35
45
55
65
75
85
6 White-
Left
Captive
Left
Not
Drop
Center
Right
Trough
Blue
Out lane
Ball 1
Score
Used
Target "D"
Ramp
Ramp
6
J209-7
Post
Exit
Exit
Utll-II
16
26
36
46
56
66
76
86
7 White-
Left
Mystery
Subway
Not
Drop
Left Ramp Globe
Top
Violet
Return
Enter 1
Used Target "G"
Enter
Position
Trough
J209-S Lane
t2
Ut9-5
17
27
37
47
57
67
77
er
8 White-
3-Bank
Not
Subway
Not
Drop
Captive
Not
Not
Gray
Targets
Used
Enter 2
Used Target "E"
Ball 3
Used
Used
J209-11
Ut9-7
18
28
38
48
56
68
78
88
D
=
Opto, Typically Closed
J2XX
=
CPU Board. J9XX
=
Fliptronic " Board
SWITCH MATRIX CIRCUIT
CPU
Board
Flipper
Grounded
Switches
Black-Green
J906-t
Right Flipper End
of Strok8
Fl
BI ue- Violet
JIIOS-1
Right Flipper
Opto
F2
Black-Blue
J906-3
Lett Flipper
End of Stroke F3
Blue-Gray
J905-2
Lett Flipper
Opto
F4
Black-Violet
J906-4
Upper
Right Flipper
F5
End of Stroke
Black-Yellow
J905-3
Upper Right
FlipperOpto F6
Black-Gray
J906-5
Upper
Laft Flipper
F7
End of Stroke
Black-Blue
J905-5
UpperLatt
Flipper Opto F8
OIf
On
Playfield
Inaclive
Active
H
L
L
H
Column (example)
LS 374SC
+5V
I
White-XXX
74LS240
Off
On
Row (example)
The microprocessor is constantly strobing the column side of the switch, When point "A" on the column circuit toggles low
the column side is active.
When a switch closes, the row side of the circuit activates. The "+" input to the LM339 drops below +5V causing its output to
go low. Corresponding row and column switches must be low at the same time, for the switch to be considered closed by
the microprocessor.
When the switch opens, the "+" input to the LM339 is above +5V, its output is high and the row is
inactive.
Judge Dredd 3-2