TM 11-6625-3041-12/TO 33A1-8-908-1
3-11. TROUBLESHOOTING PROCEDURE (cont)
b.
Detailed Troubleshooting
To localize to a major assembly any problem with the operation
Purpose
of the SG-1139.
Associated Check Step
Major Assembly
Major
Assemblies
Case Assembly . . . .
AC Input card . . . .
Multi VDC card . . .
Transmit 1 card ..
Transmit 2 card ..
Receive 1 card . . .
Receive 2 card . . .
Control Filter...
Procedure
Each step in the procedure serves as a foundation for the next.
Therefore, each step must be performed in the order given. If
they are not, the information given under "This step checks
the following:" and the "possible cause" information is invalid.
Trouble analysis is aided by fault lamps on the front panel
Fault Lamps
(FAULT and POWER SUPPLY) and on each circuit card. If these
are not working, however, this procedure can still be used but
it will take longer to perform.
Any observed front-panel indications that are not specifically
Indications
called out in the procedure can be ignored.
Indicators are illustrated as follows:
Indicators
White (blank) .. Not lit or can be ignored
Half black . . . . . Blinking
Black . . . . . . . . . . Lit
a.
TK-101/G Took Kit, Electronic Equipment, for 1/4-in. socket
Equipment
wrench or flat-tip screwdriver.
Required
b.
Cables terminated in triaxial connectors, 2 ea, appendix D.
c. BNC cables, 2 ea, supplied as accessories.
d.
BNC adapters, 2 ea, supplied as accessories.
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