Basic HTML Version
LAMP MATRIX
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I
2
.3
4
,
5
6
7
8
!
Yellow-
Yeilow-
Yellow-
Yellow-
Yellow-
Yellow-
Yellow-
Yellow-
Brown
Red
Orange
Block
Green
8:ue
Violet
Gray
J137-1
J137-Z
J137-3
J137-4
J137-5
J137-6
J137-7
J137-9
i
098
097
096
095
094
093
092
091
W
Red-Brown
Salt
Los
San
Bad
Monday
Wednesday
Bonus
Flying
J134-1
Lake
Angeles
F
rcncisco Weather
6X
Racks
090
5X
1
11
21
31
41
51
61
71 Blast 81
Red-Black
Denver
Las
Seattle Jets At
Spinner
Tuesday
Bonus
Flying
J134-2
Vegas
Max
At
5X
Rocks
089
Max
Radio
2
12
22
32
42
52
62
72
Riot
82
Red-Orange
Butte
Albuquerque
Left
Radio
Hold
Thursday
Bonus
Flyi,g
J134-4
Special
Bonus
4X
Rocks
088
Extra
.3
13 1
23
33
43
53
63
73 Boll
83
Red-Yellow
Minnesota
Dallas
Shoot
Million
Light
Friday
Bonus
Left
J134-5
Here
Plus
Extra
3X
Bridge
087
Left
Wheel
Ball
Out
4
14
24 Loop 34
44 Wheel 54
54
74
84
Red-Green
Kansas
New
Shoot
Big
Lunch
Lock
Bonus
Bob's
J134-5
City
Orleans
Agair
Millions
Time
2X
Bunker
087
5
15
25
35
45
55
65
75
85
Red-Blue
New York
Noshvil e
Right
jght
Bob's
Extra
'_ight
Right
J134-7
City
Spec 01
Special
Freebie
Ball
extra Boll
Bridge
086
Lower
Ou:
6
16
26
36
46
56
66
76
86
Red-Violet
Ohio
Atlanto
Blasting
Light
Shoot
Shoot
Start
City Buy
J 13
4
-8
Zone
Big
Here
Here
In
084
Blast
Left
Right
Button
7
17
27
37
47 Romp 57 Loop 67
77
87
Red-Gray
Chicago
Miami
Shoat
Flyi1g
You're
Light
Million
Start
J134-9
Here
Rocks
There
Bob's
Plus
Button
083
!
Right
Right
8
18
28 Romp 38
48
58
68 Ramp 78
88
LAMP MATRIX CIRCUIT
COLUMN
OiT
ON
PLAYFIELD
L
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_
The microprocessor sends a signal to the column circuit causing the output of the UNL-2803 to toggle,
When point "An drops low, the TIP107 transistor conducts and point "8" changes to a high state,
At the
same time, the microprocessor drives the input of the 74LS74 low, causing a high at output "F", A high
state at the base of the TIP1 02 causes the transistor to conducts, bringing the row circuit to ground and
turning the lamp on,
The microprocessor changes the input of the 74LS74 to a high state to turn the lamp off,
In overcurrent conditions, the lamp is shut off through the comparator, If the voltage at the negative input
of the LM339 rises above 1.4V, the output changes to a low, which is fed back to the 74LS74 and shuts
the row circuit off,
3-4