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400 SERIES MAINTENANCE MANUAL Page B-11
P/N 190-00140-05 Rev. C
B.4 COM BOARD CONNECTORS
B.4.1 J2
Table B-12. J2 Descriptions
Pin # Name I/O
1 RESERVED
2 COM IF AGC TEST O
3 SQUELCH / COMPRESSOR
TEST
I
4 COM MIC KEY I
5 INTERCOM MIC HI I
6 COM MIC AUDIO HI I
7
500 : COM AUDIO HI
O
8 RESERVED I
9 RESERVED I
10 RESERVED I
11 AIRCRAFT POWER I
12 AIRCRAFT POWER I
13 RESERVED O
14 TRANSMIT INTERLOCK I
15 COM REMOTE TRANSFER I
16 SPARE -
17 INTERCOM MIC LO I
18 COM MIC AUDIO LO I
19
500 : COM AUDIO LO
O
20 COM AUDIO IN LO I
21 AIRCRAFT GROUND I
22 AIRCRAFT GROUND I
23 RESERVED I
24 RESERVED I
25 RESERVED O