TM 5-6350-264-14&P-12
NAVELEX EE 181-AA-OMI-120/E121 C-7359-60-1
TO 31S9-2FSS9-1-12
Table 5-1. Troubleshooting Procedures - Continued
Corrective action
Probable cause
Trouble
Check interconnecting wiring dia-
a. (cont)
2. (cont)
gram to determine which terminals
the transmission lines are connected
to in Monitor Cabinet.
b. Ensure that all connections are clean
and secure.
a. Set multimeter to dc volts and con-
b. Changes in power
nect positive meter lead to CU
supply voltage to
TB7-S5 and negative meter lead to
Data Transmitter.
TB7-S6. Meter should indicate 20
1 vdc. Maintain this check for a
period of time to ensure that vol-
tage is stable.
(1) If this indication is not correct,
disconnect red and black wires
from TB7-S5 and S6, and con-
nect meter leads to these ter-
minals. Meter should indicate
20 1 vdc. Maintain this check
for a period of time to ensure
that voltage is stable.
(2) If voltage changes, check CU
power supply per steps in
TM 5-63560-264-14/10&P.
b. If voltage on TB7-S5 and S6 is good,
reconnect red and black wires to
TB7-S5 and S6. Connect meter
positive lead to Data Transmitter
PC board A1-E21 and negative
meter lead to CU TB7-S6. Meter
should indicate 20 1 vdc. Main-
tain this check for a period of
time to ensure that voltage is
stable.
c. Connect positive meter lead to Data
Transmitter PC board A2-E7 and
negative meter lead to CU TB7-S6.
Meter should indicate 20 1 vdc.
Maintain this check for a period
of time to ensure that voltage is
stable.
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