ARMY TM 5-6675-309-14
MARINE CORPS TM 08840A-14/1
Section III. TROUBLESHOOTING
b. Test Connections. Connect cables only when
8-7. General.
Should malfunction of the PSTS be
sus-
called for in the test procedures.
pected, perform test procedure in accordance with
table 8-5. The table is
arranged in
four columns. The
NOTE
first column contains the test operation to be per-
Incorrect connections can cause wrong
formed. The second column contains the normal indica-
tion to be observed when the procedure has been
connections.
performed. The third column contains the corrective
action to be taken if the normal indication is not
c. Procedure. Perform testing in accordance with
the schematic diagram of the affected circuitry. When
performing corrective actions, refer to the PSTS sche-
determine where to make voltage measurements. For J2
selected manually. The digital voltmeter
does not change range automatically.
NOTE
corrective action has been taken, the complete test
procedure must be repeated to verify repair. The self-
In the malfunction indication/corrective
test procedure must be followed in the order given.
to be replaced are listed in order of most
likely failure. Verify component failure by
8-8. Power Supply
Test Set Troubleshooting.
fore replacement. After a component is
a. Test Equipment and Materials.
replaced, check for normal indication be-
f o r e attempting to replace another
component.
Indicators may light at various times
ments.
throughout this test. Unless listed in table
8-5 as a
normal indication, disregard the
(2) Stopwatch.
lighted indicator.
If the corrective action does not eliminate
the malfunction, then check for parallel
273.
s h o r t i n g paths (e.g., shorted diodes,
shorted relay contacts, etc.)