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Page Title:
Localizing and Isolating Troubles |
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|  (d) S e t t h e r e c e i v e r - t r a n s m i t t e r
(d) Connect Handset H-138/U to one
controls as follows:
of the receiver-transmitter AU-
DIO connectors.
(e) S e t t h e r e c e i v e r - t r a n s m i t t e r
controls as follows:
OFF
Function switch --------------
30-53
BAND switch ----------------
45.00
T u n i n g controls --------------
5
VOLUME control -------------
Function switch --------------
OFF
30-53
BAND switch ----------------
T u n i n g controls --------------
45.00
5
VOLUME control -------------
a. Test Conditions. Perform all checks
make the voltage and resistance
outlined in the troubleshooting chart with
checks directed in the trouble-
the equipment under test connected to the
shooting chart (para 38).
BA-386/PRC-25 and to the additional
(2) Transmitter section.
equipment as specified in paragraph 37.
Disconnect the BA-386/PRC-25 when mak-
to provide antenna loading for the
ing resistance checks.
transmitter. Set the 15W-60W
b. Test Procedure. Turn the test equip-
switch on the AN/URM-43A at
ment on and allow for a 5-minute warmup.
15W.
Set the function switch of the RT-505/PRC-
(b) Connect the AN/URM-43A to the
25 at ON.
receiver-transmitter ANT con-
Note: For removal and replacement of modules,
nector.
refer to TM 11-5820-398-20, paragraph 10.
(c) Connect Handset H-138/U to one
c. Troubleshooting Charts.
of the receiver-transmitter AU-
(1) Troubleshooting chart for receiver
DIO connectors.
section of R T-505/PRC-25.
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