SYSTEM TROUBLESHOOT THE INTERCOMMUNICATION SET
AN/VIC-1(V) WITH MEDIUM POWER FM RADIO
AND COMSEC EQUIPMENT (VINSON)
OBJECTIVE
After completing this subcourse, you will be able to troubleshoot the
intercommunication set AN/VIC-1(V) with medium power FM radio and
communication security equipment (VINSON) to a defective component, cable,
and/or accessory; and you will be able to perform the required repair
actions.
REFERENCES
This subcourse is based on information contained in TM 11-5820-401-20-2, TM
11-5830-340-12, (0) TM 11-5810-312-12-1 and other materials approved for US
Army instruction; however, development and progress render the text
continually subject to change. Therefore, base your examination answers on
material presented in this subcourse rather than on individual or unit
experience.
1. INTRODUCTION.
This subcourse is an intensified study of a typical
communication system found in a track vehicle.
The circuits will be
analyzed, discussed, and traced. You will learn how to system troubleshoot
the system when a defect is observed. A system diagram (INSERT) has been
included in this subcourse for circuit tracing and a better understanding of
how the system operates.
This is not a simple system to understand or
troubleshoot.
This subcourse is designed to give you the knowledge and
understanding of how all of the circuits work. When something does not work
properly, it teaches how to find the problem and fix the system. The better
you understand how the circuits work, what can go wrong and how to
troubleshoot the problem, the better you will be able to fix the system.
System troubleshooting procedures are:
a. Evaluate the operation of the system and analyze uncorrected faults
noted on DA Form 2404 as to a circuit of the system that, when bad, would
cause the problem.
(1) DC power circuits.
(2) Matching unit DC control circuits.
(3) Receive signal paths.
Squelch disable circuit.
(4) Keying and muting circuits.
(5) Transmit signal paths.
(a) RF generation and output.
(b) Modulation.
(6) Ground.
W16416b
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