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
6.
(Cont)
Improper
bottom of CU enclosure. Con-
operation of
nect wires to battery terminals.
audible signal
Switch on main circuit breaker.
device. (Cont)
(3) 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 chassis (ground). Connect
positive 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.
e.
If meter indicates 0 volts, remove PC
board A8.
(1) To remove PC board A8, turn off
switch S1 on top of power sup-
ply. Place thumb or finger un-
der board ejector and lift up
until board pops out of recep-
tacle at back of status processor.
Then grasp PC board and pull
straight out.
(2) 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 chassis (ground). Connect
positive lead to power supply,
TB2-3. Meter should indicate
20 ±1 vdc. Connect positive
5-90
