TM 5-6350-264-14&P-10
NAVELEX EE 181-AA-OMI-110/E121 C-9412
T.O. 31S9-2FSS9-1-10
Table 5-2. Troubleshooting Procedures - Continued
Trouble
Probable cause
Corrective action
10. (Cont)
b.
(Cont)
d.
If meter indicates 28 +2 vdc, replace
battery.
(1) To remove battery, turn off switch
S1 on power supply. Discon-
nect wires from battery termi-
nals. As battery is heavy, care-
fully lift and turn to remove it
from bottom of enclosure.
(2) To install new battery, position it
outside CU enclosure. Care-
fully insert battery end first;
turn and lower it into bottom
of CU enclosure. Connect
wires to battery terminals.
Turn on switch S1 on power
supply. Connect meter leads
to battery terminals. Meter
should indicate 28 + 2 vdc.
Depress TRANSMITTER RE-
SYNC switch S2. Wait about
5 minutes for system to sta-
bilize. During 5-minute stabili-
zation period, check power sup-
ply. Set multimeter to dc volts
and connect negative lead to
chassis (ground). Connect pos-
itive lead to power supply,
TB2-3. Meter should indicate
20 ± 1 vdc. Connect positive
lead to TB2-5. Meter should
indicate 5 ± 0.25 vdc. Connect
lead to TB2-2. Meter should
indicate 28 + 2 vdc. Turn mode
switch to TEST/RESET and
then to SECURE.
5-121
