Page 118 - Corvette

LAMP MATRIX Yellow (8+) ~Red
~
1 2 3 4 5 6 7 8
Yellow- Yell ow- Yellow- Yellow- Yellow- Yellow- Yellow- Yellow-
Brown Red Orange Black Green Blue Violet Gray
J137-1 J137-2 J137-3 J137-4 J137-5 J137-6 J138-7 J138-9
w 098 097 096 095 094 093 092 091
Red- Left Outer Left Right
1 Brown Left Inner Loop Loop Corvette Corvette Outer Kickback Tree
J133-1090 Rollover Arrow Arrow 6 9 Tail Arrow Red
11 21 31 41 51 61 71 81
Red- Left Left Left
2 Black Middle Fuelie Lite Corvette Corvette Inner Return Tree
J133-2089 Rollover Lock 3 8 Tail Lane Red
12 22 32 42 52 2 72 82
Red- Right Tree
3 Orange Right Nitrous Oualify Corvette Pit Catch Return Bottom
J133-4088 Rollover 1 Stop Me lane Yellow
13 23 33 43 53 63 73 83
Red- Right Right Tree
4 Yellow Skid Pad Inner Loop Big Corvette Corvette Inner Our Top
J133-5087 Arrow Jackpot Block 2 7 Tail Lane Yellow
14 24 34 44 54 64 74 84
Red- Right Outer Right Right
5 Green Sticky Loop ZR-1 Corvette Corvette Outer Million Tree
J133-6086 Tires Arrow Ramp 4 5 Tail Standup Green
15 25 35 45 55 65 75 85
Red- 6 Left Pit Right Side Left
6 Blue Skid Pad Z07 Speed Standup Stop Standup Pipe Tree
J133-7085 Jackpot Suspension Trans 3 Arrow Arrow 1 Green
16 26 36 46 56 66 76 86
Red- Hi Left Side
7 Violet Route 66 Big Lift Standup Spinner Lite Pipe Buy
J133-8084 Arrow Brakes Cams 2 Arrow Kickback 2 In
17 27 37 47 57 67 77 87
Red- ZR-1 Left Side
8 Gray Race Super Ramp Standup Drive Start Pipe Start
J133-9083 Today Charger Arrow 1 Again Challenge 3 Button
18 28 3B 4B 58 6B 78 88
J1XX = Power Driver Board
LAMP MATRIX CIRCUIT
POWER DRIVER BOARD Column
Column (example)
J113
.2 Off
On
The processor sends a signal to the column circuit, causing the output of the ULN-2803 to toggle. When point "A" drops low, the
TIP107 transistor conducts and point "B" changes to a high state. At the same time the processor drives the input of the 74LS74
low, causing a high at output "F". A high state at the base of TIP102 causes the transistor to conduct, bringing the row circuit to
ground and turning the lamp On.
The processor changes the input of the 74LS74 to a high state to turn the lamp Off.
In overcurrent conditions the lamps is shut Off through the comparator. If the voltage at the negative input of the LM330 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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