Basic HTML Version
SWITCH MATRIX
White
____..r------/o-
Green
~
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
Grounded
Switches
J206-1
J206-2
J206-3
J206-4
J206-5
J206-6
J206-7
J206-9
Switches
w
U20-18
U20-17
U20-16
U20-15
U20-14
U20-13
U20-12
U20-11
Orange-Brown
Whlte-
Black-Green
J20S-1 UI7-S
1 Brown
LAUNCH SLAM TROUGH MARTI'A'N LEFT
LEFT
RIGHT
NOT J20B-13
J20B-l
BUTTON TILT
EJECT TARGET SLINGSHOT RAMP
LOOP
USED Lower Right
Left Coin Chute 01
U1B-ll
ENTER HIGH
FlipperEOS Fl
11
21
31
41
51
61
71
Bl
Orange-Red
White-
Blue-Violet
J20S-2 U17-7
2 Red
NOT
COIN TROUGH MARTIA'N'
RIGHT CENTER RIGHT
NOT J212-12
Center
J20B-2
USED DOOR BALL 1 TARGET SLINGSHOT RAMP
LOOP
USED Lower Right
Coin Chute
02
U1B-9
CLOSED
ENTER LOW
FlipperOpto F2
12
22
32
42
52
62
72
82
Orange-Black
White-
Black-Blue
J205-3 U17-11
3 Orange
START
NOT TROUGH MAR'T'IAN LEFT
RIGHT
LEFT
NOT J208-12
J20B-3 BUTTON USED BALL 2 TARGET
JET
RAMP
LOOP
USED Lower Left
Right Coin Chute 03
U1B-5
ENTER HIGH
FlipperEOS F3
13
23
33
43
53
63
73
83
Orange-Yellow
White-
Blue-Gray
J20S4 U17-9
4 Yellow PLUMB ALWAYS TROUGH MART'I'AN BOTTOM LEFT
LEFT
NOT J212-11
J208-4
BOB CLOSED BALL 3 TARGET
JET
RAMP
LOOP
USED Lower Left
4th Coin Chute D4
U18-7
TILT
EXIT
LOW
Flipper Opto F4
14
24
34
44
54
64
74
64
Orange-Green
White-
Black-Violet
J205-6 U1S-9
5
Green
NOT
NOT TROUGH LEFT
RIGHT
RIGHT
LEFT
NOT J20B-ll
N, •••• ,
I
TnI
J20B-5
USED USED BALL 4
MOTOR JET
RAMP SAUCER USED Upper Right
F\rICIII)n
FlIICtIon
U19-11
BANK
EXIT
TARGET
Flipper EOS F5
Ser Credits Esc 05
15
25
35
45
55
65
75
85 (NOT USED)
Orange-Blue
White-
Black-Yellow
J20S-7 U1S-11
S Blue
LEFT
LEFT
LEFT CENTER 'M'ARTIAN MOTOR RIGHT
NOT J212-10
N••••• '
I
T•••
J20B-7 OUTLANE RETURN POPPER MOTOR TARGET BANK SAUCER USED Upper Right
FlI'ICtIon
FIIIdion
Vol Down Down D6
UI9-9
BANK
DOWN TARGET
FlipperOpto FS
16
26
36
46
56
66
76
86
Orange-Violet
White-
Black-Gray
J205-t1 U1S-7
7
Violet
RIGHT
RIGHT
RIGHT
RIGHT M'A'RTIAN MOTOR DROP
NOT J20B-l0
"«m,"
I
T•••
J20B-8 RETURN OUTLANE POPPER MOTOR TARGET BANK TARGET USED Upper Left
''''''''"
'''''''''"
Vol Up
Up 07
UI9-5
BANK
UP
FlipperEOS F7
17
27
37
47
57
67
77
87 (NOT USED)
Orange-Gray
White-
Black-Blue
J205-9 UtS-5
8 Gray
SHOOTER EDDY
LEFT
RIGHT MA'R'TIAN NOT
CENTER NOT J212-9
"""""
I
Tnt
J208-9
LANE SENSOR TOP
TOP TARGET USED TROUGH USED Upper Left
FlI"Idion
FII"CtIon
Begin Test Enter 08
U19-7
LANE
LANE
Flipper Opto F8
18
28
38
48
58
68
78
88
J2XX
=
CPU Board,
o -
Opto, TYPically Closed
SWITCH MATRIX CIRCUIT
,-----------------------------------,
: Co lumn (examp le)
+
12V
:
:
~lK
:
D
ULN2803
J206
,
~>=B __
----+-
A:__: I
X
r
~
~
r
Green-XXX
- ---joI--- ,
'::t~
470pf
r
74HC237
:
r
CPU BOARD
r
PLAYFIELD
+12V
r
J208 :
iN41 48
:
'---",A
_ _j_
[]
r
While-XXX
I
470Pf ~:
~R~O~W~~~~~~_r=-~~--
R (
I )
r
SWITCH OPEN
OFF
~ __ C?::' __
\~:9~~_e
-.:
j
SWITCH CLOSED
ON
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 +5V, its output is high and the row is inactive.
COLUMN A B
INACTIVE
ACTIVE
H
L
L iOFF
H
ON
3-2