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,
bracket; slip bracket over lock.
or mode switch
Engage switch shaft in lock.
S3. (Cont)
Tighten nut to secure switch.
(3) Turn on switch S1 on power sup-
ply. Depress TRANSMITTER
RESYNC switch S2. Wait
about 5 minutes for system to
stabilize. Turn mode switch
to TEST/RESET and then to
SECURE.
j.
If meter indicates 0 v at switch S3, ter-
minal 2-4, connect positive meter
lead to power supply TB2-3.
k.
If meter indicates 0 v, check fuse F2.
l.
If F2 is good, replace power supply.
(1) To remove power supply, pull main
circuit breaker to remove 120
vac from CU. Disconnect wires
from battery. As battery is
heavy, lift and turn it to remove
from bottom of CU enclosure.
Tag and disconnect 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 sup-
ply to side of CU enclosure.
Be careful not to drop it in-
side CU. Note cable clamp un-
der screw near TB4 (bottom
front). Support power supply
and turn it so wires can be tag-
ged and disconnected from TB3
on bottom of power supply.
(2) 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
5-98
