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
2. (Cont)
d. (Cont)
wires from TB2 and TB4. Remove
screws that secure cover, and remove
cover. Tag and disconnect wires
from TB1. Carefully remove screws
that secure power supply to side of
CU enclosure. Be careful not to
drop it inside CU. Note cable clamp
under screw near TB4 (bottom
front). Support power supply and
turn it so wires can be tagged and
disconnected from TB3 on bottom
of power supply.
(2)
To install new power supply, remove
cover, and turn unit so TB3 is acces-
sible. Support power supply, and
connect wires to TB3. Turn power
supply upright and position it over
standoffs on side of CU enclosure.
Note that cable clamp goes under
screw on bottom front of power
supply. Insert screws and tighten
to secure power supply. Connect
wires to TB1. Replace cover and
secure with screws. Connect wires
to TB2 and TB4. Position battery
outside CU enclosure. Carefully
insert battery end first; turn and
lower it into bottom of CU enclos-
ure. Connect wires to battery ter-
minals. Switch on main circuit
breaker.
(3)
Turn on switch S1 on power supply.
Depress TRANSMITTER RESYNC
switch S2. Wait about 5 minutes for
system to stabilize. During 5-minute
stabilization period, check power
supply. Set multimeter to dc volts
and connect negative lead to chassis
(ground). Connect positive lead to
power supply, TB2-3. Meter should
indicate 20 1 vdc. Connect posi-
tive lead to TB2-5. Meter should in-
dicate 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.
5-46
