Basic HTML Version
SWITC H
MA~T-=-R~IX7=---r---~..---::---.----=----.-----;-----.---=----r--:=--":':':":':::-..--~ .--_;__~
2
3
Green-
Red
J207-2
U20-17
Dedicated
Grounded
Switch ••
Left Coin Chute 01
GUN
TRIGGER
SLAM
TILT
White--
<r-
Green
4
5
7
8
Green-
Green-
Green-
Green-
Flipper
Black
Blue
Violet
Gray
Grounded
J207-5 J207-6 J207-7 J207-9
Switches
U20-14 U20-13 U20-12 U20-11
WALL
LEFT
MINI LEFT
TARGET
SLINGSHOT
STANDUP
DOWN
1
51
71
Orange-Brown (1)
J205-1
11
Orange-Red
(2)
J205-2
Center
Coin Chute
D2
Orange.Black
(3)
J205-3
Right Coin Chute 03
Orange-Yellow (4)
J205-4
4th Coin Chute
04
Orange-Green
J205-6
No"".
I
~Credlta
(5)
Orange-Blu.
(6)
J205-7
No"""
I
T••
_n .
Vol Oown Oown D6
Orange-VIolet
(7)
J205-6
.•....•
F_
Vol Up
Orange-Gray
(8)
J205-I
.•....• I
TOOl
Function
Ftn:Ion
BegIn Test Enter 08
J2XX
=
CPU Board;
SWITCH MATRIX CIRCUIT
I···
CPU
,~"~~~:::m"':,··,~,."
-
--;;N······ -,
c..~-m
+12V
Column
Off
On
Ployfield
Inactive
Active
White-XXX
Row
Off
On
Row (exemple)
•...
_-------------------------------------------------------------_-
------------
..•
Switch Open
Switch Closed
The microprocessor is constantly strobing the column side of the switch. When point "An 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
"+n
input to the LM339 is above +5V, its output is high and the row is inactive.
3-2