TM 11-5820-880-12
SECTION VI
TROUBLESHOOTING
This section provides troubleshooting data (see table 4-2) for use in isolating problems detected
by organizational personnel during in-place operation of the multiplexer. If faults cannot be
isolated as described in this section, maintenance must be referred to higher echelon
maintenance personnel.
Table 4-2. Troubleshooting
Corrective Action
Indication
No meter indication on any
a. Check cable from transceiver to multiplexer. Look
function.
for poor connection or badly worn cable.
b. Check to see that the transceiver is on.
Check cable connections. Look for loose connection
Meter movement is erratic.
or faulty connectors.
Check frequency separation of 5% with other band-
Meter movement will not go to a
pass filters.
minimum.
Meter indication for forward power
a. Check antenna coax cables and
antenna.
and reflected power the same.
b. Check for proper tuning.
c. Check frequency separation of 5%
with other
band-pass filters.
Meter movement forward power is
a. Check coax from transceiver to band-pass filter.
not within 10% of transceiver
output power after tuning.
b. Check for proper tuning.
c. Check frequency separation of 5%
with other
band-pass filters.
4-9