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CHATTANOOGA
GROUP INC.
JP3
US Control Board
Pin #
Signal Name
Type
1
Unregulated Power
Power
+8 to +18VDC,
Current Limited
2
Buzzer On
Output
Open Collector, Active
Low
JP4
US Control Board
Pin #
Signal Name
Type
1 Unregulated
DC Power
8-18VDC
2
Fan On
Output
Open Collector, Active
Low
JP5
US Control Board
Pin #
Signal Name
Type
1 Ground
2
US Data Line 0
Bi-Directional
Digital
3 Ground
4
US Data Line 1
Bi-Directional
Digital
5 Ground
6
US Data Line 2
Bi-Directional
Digital
7 Ground
8
US Data Line 3
Bi-Directional
Digital
9 Ground
10
US Data Line 4
Bi-Directional
Digital
11 Ground
12
US Data Line 5
Bi-Directional
Digital
13 Ground
14
US Data Line 6
Bi-Directional
Digital
15 Ground
16
US Data Line 7
Bi-Directional
Digital
17 Ground
18 No
Connection
19 Ground
20
US Address Line 0
Output
Digital
21 Ground
22
US Address Line 1
Output
Digital
23 Ground
24 No
Connection
25 Ground
26 No
Connection
27 Ground
28 No
Connection
29 Ground
30
US Strobe
Output
Digital Active Low
31 Ground
Innovation starts here
TM
11
Intelect
®
Legend Series Service Manual