Basic HTML Version
SWITCHES
Dedicated
Grounded
Switches
Orange-Brown
J205-1
Lan Coin
Chuta
01
oranr-Rad
J205-
CentarColn
Chuta
D2
Oranr-BlaCk
J205-
Right Coin
Chuta
D3
Orange-Yallow
J205-4
4th Coin
Chuta
D4
oragr.Q •.••n
J20
Nann.
I Toot
Funclion
I
Funclion
5etY1cIIbca~!i
CNdI.
Oranr-BIUa
J205-
Nann.
I Toot
Function
I
Funciion
Volu ••
~
Down I
Oratr-VIOIIt
J20
Nannol I Toot
v
unclion
I~
~U •• I
07
Orange.Qray
J205-9
Nannol ITIII
Funciion
I
Funciion
~n
,En-
08
Graan--o '0
I"
Whlta
1
2
4
5
6
a
Grean- Green-
Green- Grean-
Grean-
Grean-
Brown Red
Yallow Black
Blua
Gray
J207-1 J207-2
J207-4 J207-5 J207-41
J207-9
U20-18 U20-17
U20-15 U20-14 U20-13
U20-11
Ball
launch
Whlt __
Red
J209-2
2 U18-9
Whlt __
Orange Start
J209-3 Button
3 U18-5
13
Whlt __
Upper
Yallow
Rebound
J209-4
4 U18-7
54
Whlt __
Left
Grean
Loop
J209-5
5 U19-11
45
55
Whlt __
Left
Standup Eject
Blua
J209-7 Inlane
2
U19-8
Whlt __
Right
Right
Violet
Inlane
Ramp
J209-8
Exit
7 U19-5
17
27
37
47
77
Whlt __
~~
Not
Standup Right
Standup Not
Lower
Gray
StandLJP
J209-9
Used
5
Freeway
4
Used
1 Rebound
8 U19-7
18
28
38
48
58
68
78
68
[)):;:J -
Opto
Switch
.
=
Not Used
SWitch Matrix Circuit
-----------------------------,
:
CPU
BOARD
+12V
I
+5V
Column
Inactive
Active
I
Column (example)
Playf1eld
J209
I
, White-XXX
Row
C
74LS240
l"70
P
f
Switch Open H
Switch
Closed
L
I
• _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ J
Row
(example)
Flipper
Grounded
Switches
Black-Grean
J906-1
LowarRlght
E.O.S.
F1
Blue-Viol«
J905-1
Lower Right
Opto
F2
Black-Blue
J906-3
LowarLan
E.O.S.
F3
Blua-Qray
J905-2
LowarLan
Opto
F4
Black-VIolet
J5I06-4
Upper Right
E.O.S..
F5
Black-Yellow
J905-3
Upper Right
oilio·
F6
Black-Gray
J906-5
Upper Laft F7
E.O.S.
Black-Blue
J905-5
Upper Laft Fa
Opto
A
H L Off
L H On
o
Off
On
E
H
L
L
H
The microprocessor is constantly strobing the column side of the switch. When point "A" on the column circun toggles low
the column side is active.
When a swnch closes the row side of the circuit activates. The" +ft input to the LM339 drops below +5V therefore ns output
is low. Corresponding row and column switches must be low at the same time, for the swttch 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.
DEMOLITION MAN 3-2