Basic HTML Version
SWITCH MATRIX
!~
1
2
3
4
5
6
7
8
Dedicated
Green-
Green-
Green-
Green-
Green-
Green-
Green-
Green-
Flipper
Grounded
Brown
Red
Orange
Yellow
Black
Blue
Violet
Gray
Grou nded
J207-1
J207-2
J207-J
J207-4
J207-5 J207-6
J207-7
J207-9
Switches
U20-18
U20-17
U20-16
U20-15
U20-14 U20-13
U20-12
U20-11
Switches
ROW
prg-Brn
White-Brown
Ted's
Slam
Skill
Trough
Spinner
Left
Right
Block-Green
205-1
J209-1
White
J906-1
Mouth
Tilt
Shot
Jam
Sling Ramp
eft Coin
U18-11
Stondup
Lower Right
hute
Lower
Enter
E.O.S.
Dl
1
11
21
31
41
51
61
71
81
Fl
Org-Red
White-Red
Dozer
Coin
Skill
Trough
Lockup
Right
Right
Red
Biua-viore:
J205-2
J209-2
Down
Door
Shot
I
I
Sling IRamp
Stnncup
J905-1
Center Coin
U18-9
Closed
Upper
' Exit
Lower Right
Chute
02
2
12
22
32
42
52
62 Center 72
82
Opto
F2
Org-8lk
White-Orange
Start
Buy
Right
Trough
Lockup
Left
Flying
Yellow
B'ock-Btce
J2C5-J
J209 -3
Button
In
Shooter
2
2
Jet
Rocks 5X Stundup
J906-3
Right Coin
U1B-5
Button
Blost
Lower Left
Chute
03
3
73
E.OS
13
23
33
43
53
63
83
"3
prg-Vel
White-Yellow
Plumb
Always
Radio
Trough
Lock
Top
Flying
Orange
Blue-Gray
~205-4
J209-4
Bob
Closed
3-Bonk 3
Kickout
Jet
Rocks
Stondup
J90S-2
4th Coin
U1B-7
Tilt
Radio
Lower Left
rv
hute
D4
4
14
24
34
44
54
64 Riot
74
54
Opto
F4
Org Grn
White-Green
Dozer
Red's
Red
Trough
Right
Right
Flying
Middle
Black-Violet
J205-6
J209 -5
Up
Mouth
Stondup ] 4
Romp
Jet
Rocks
Left
J906-4
Normal
Test
Service
E:I;eoj)e
U19-11
Upper
Exit
Extrc
Flipper
Upper Left
Credit
Left
65 Bali
Top
E.OS
05
5
15
25
35
45
55
75
85
F5
Orq+Blu
White-3lue
Right
Left
Red
Right
LeFt
Not
Flying
Middle
Black~vellow
J205 -7
J209-7
Outlane Outlane
Stondup Loop
Romp
Usee
Racks
Left
J905-3
Normcl
Test
U19-9
Lower
Enter
Ex;t
Top
Flipper
Upper Left
Volume
Down
Bottom
86
Optc
Do •• n
06
6
16
26
36
46
56
66
76
F6
Drg Via
White-Violet
Right
Left
Hit
Hit
Left
Not
Under
Not
Black-Gray
J205-8
J209-B
Inlone
Inlone
Red
Bulldozer
Romp
Used
Blast
Used
J906-5
Normol
r••
t
U19-5
2
Enter
Zone
Middle Left
Volume
Up
Up
07
7
17
27
37
47
57
67
77
87
LO S
F7
Drg-Cry
White-Gray
Right
Blast
Right
Hit
Left
Nat
Start
Not
Block-Blue
J205-9
J209-9
Inlone
Zone
Loop
Ted
Shooter
Used City
Used
J905-5
Normal
T"t
U19-7
1
3-Bank
Exit
Middle Left
8eqin
Enter
Test
8
Opta
DB
lB
28
38
<8
58
68
78
88
F8
SWITCH MATRIX CIRCUIT
~-cpO-B6AR-6- -----------+12-V------~
Column
OFF
ON
PLAYFIELD
+5V
ROW
OFF
ON
Row (example)
~--------- --------------------- ------~
SWITCH OPEN
SWITCH CLOSED
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,
therefore, its output is 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 +SV, its output is high and the row is inactive.
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