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
7.
(Cont)
Bad PC board A8,
so wires can be tagged and dis-
or mode switch
connected from TB3 on bot-
S3. (Cont)
tom of power supply.
(4) To install new power supply, re-
move cover, and turn unit so
TB3 is accessible. Support
power supply and connect
wires to TB3. Turn power sup-
ply upright and position it over
standoffs on side of CU en-
closure. Note that cable
clamp goes under screw on bot-
tom front of power supply. In-
sert screws and tighten to secure
power supply. Connect wires
to TB1. Replace cover and se-
cure with screws. Connect
wires to TB2 and TB4. Posi-
tion battery outside CU en-
closure. Carefully insert bat-
tery end first; turn and lower
it into bottom of CU enclosure.
Connect wires to battery ter-
minals. Switch on main circuit
breaker.
(5) Turn on switch S1 on power sup-
ply. Depress TRANSMITTER
RESYNC switch S2. Wait
about 5 minutes for system to
stabilize. During 5-minute sta-
bilization period, check power
supply. Set multimeter to dc
volts and connect negative lead
to power supply, TB2-3. Meter
should indicate 20 ±1 vdc. Con-
nect 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/RE-
SET and then to SECURE.
5-95
