Basic HTML Version
LAMPS
Y"IoW(B~
~
1
2
3
4
5
6
7
8
Vel low-Brown Vel low-Red Ivellow-Orange Vel low-Black Yellow-Graan Vellow-Blue Yellow-Violet
Yellow-Gray
J137-1
J137-2
J137-3
J137-4
J137-5
J137-6
J137-7
J137-9
w
'098
097
Q96
Q95
Q94
Q93
Q92
091
Red-Brown
Left Bank
Ship Mode
Top Lane
a
LeltRetum
Generic
Generic
Right
Jl33-1
Top
3
Left
Lane
3
2
Return
1
Q90
11
21
31
41
51
61
71
Lanes
81
Red-Black
LeltBank
Ship Mode
Top Lane
Generic
Left
Increase
Top
Right
J133-2
Middle
4
Center
1
Launcher
Warp
3-bank
Launcher
2 Q89
12
22
32
42
52
62
Left
72
82
Red.()range
Ship Mode
Ship Mode
TO~ Lane
Right
Advance
Spinner
Top
Million
J133-4
1
5
Ight
Lock
in Rank
3-bank
Jets
3 Q88
13
23
33
43
53
63
Center
73
83
Red-Vellow Ship Mode
Right Bank
Bonus
Holodeck
Generic
Generic
Top
Kickback
Jl33-5
2
Top
2X
6
7
3-bank
4 Q87
14
24
34
44
54
64
Right
74
84
Red-Graan
Left Bank
Right Bank
Bonus
Right
Super
Left
Left
Borg
Jl33-6
Bottom
Middle
4X
2x
Millions
Lock
Lock
5 Q86
15
25
35
Shutt1e
45
55
65
75
85
Red-Blue
Final
Command
Multipliers
GeneriC
Jackpot
Jackpot
Generic
Borg
Jl33-7
Frontier
16
Decision
26
Held
4
X
5
Jackpot
86
6 Q8S
36
46
56
66
76
Shoot
Extra Ball
Rlit
Worm
Buy-In
Red-Violet
Again
Ship Mode
Bonus
Ri9ht
Hole
Jl33-8
6
8X
Millions
7 Q84
17
27
37
47
57
67
rt
87
Ship Mode
RI~~k
Bonus
Lelt
Start
Time
Borg Ship
Start
Rad-Gray
7
lOX
2X
Mission
Button
Jl33-9
18
Shuttle
8 Q83
28
38
48
58
68
78
88
Lamp Matrix Circuit
:-pOWER
DRIVER
BOARD - - _. - - - - - - - - - - - - - - - - - - - - - -
Column A
H
L
Column (example)
ULN-2803
+18V
vee
10KO
Red-xxx
I
r---------------------,
JI33
I
LS240
LS374
c
(normal
H
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ~ operation)
H
The processor sends a signal to the column circuit causing the output of the UNL-2803 to toggle. When point "A"
drops low. the TIP107 transistor conducts and point "S" changes to a high state. At the same time the processor
drives the input
01
the 74LS74 loW. causing a high at output "F". A high state at the base of TIP1 02 causes the
transistor to conduct bringing the row circuit to ground and turning the lamp On.
74LS74
Row (example)
Row C
The processor 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.
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