Basic HTML Version
LAMP MATRIX
Yellow (8+)
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1
2
3
4
5
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7
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Vel low-
Veilow-
Veilow-
Vel low·
Vellow-
Veilow-
Vellow-
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Brown
Red
Or.n"e
Black
Glftn
Blue
Vlo•••
Only
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J121-2
J121·3
J121 ..•
J121·S
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J121·9
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0100
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099
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093
097
Red-
CRATE
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1
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STIFF
STIFF
LEFT
LEFT
RAMP lA8OAATOAY AWARD
AWARD
JI25-,O'04
LEVEL 7
LEVELS
EYE
LEAPER
ITEM
ITEM
7
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11
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Red-
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LEFT
COFFIN
WEB
WEe
2
Slack
STIFF
STIFF
CENTER
RAMP ~ULTIBALL
CRATE
AWARD
AWARD
J125-2 0108
LEVEL 6
LEVEL 9
LEFT
JACKPOT
ITEM
ITEM
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LEVEL 5
STIFF
RIGHT
LOCK
ITEM
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4
Vellow
STIFF
CENTER
RIGHT
RIGHT
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J,2S·50107
LEVEL 4
LEAPER
EYE
EYE
SPOTUGHT
2
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LEVEL 3
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SKILL
LOCK
AWARD
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SKULL
JI2S-70106
LEVEL 2
MIDDLE
LEAPER
SHOT
LAMP
4
12
LANE
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25
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THREE
RIGHT
LEFT
WEB
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7
Violet
STIFF
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RAMP
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LOOP
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AWARD
BUY
J125-801Q,
LEVEL
1
UPPER
JACKPOT
JACKPOT
CENTER
5
13
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SPIN
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START
J125·90105
EYE
POPPER
SPIDER
BALL
UPPER
8
14
BUTTON
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Power DrIVer Board
LAMP MATRIX
CIRCUIT
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i..,ron (excr-p.e )
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The microprocessor 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
"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 TIP102 causes the transistor to conducts. bringing the row circuit to ground and
tuming the lamp on. The microprocessor changes the input of the 74LS74 to a high state to tum the
lamp off.
In over-current 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 10 the 74LS74 and shuts the circuit
off.
3-4