TM 11-6625-3041-30/TO 33A1-8-908-12
2-6.
SG-1139 CHECK PROCEDURE (CONT)
If no card contains a lit fault indicator, possible cause
Step
is (in order of probability): Transmit 1 card A3, Transmit
4
cent
2 card A4, and Multi VDC card A1. Replace, one at a time
(refer to TM 11-6625-3041-12), and repeat step 4.
If none of these replacement cards provide the proper indica-
tion, possible cause is Control Filter A8. Replace (refer