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
4. (Cont)
f. (Cont)
o.
If meter indicates 0 volts, replace LATCH/
NON-LATCH switch, S5.
(1) To remove LATCH/NON-LATCH
switch, turn off switch S1 on
power supply. Remove hex nut
and lock washer from switch. Push
switch through hole in panel.
Catch keyed washer when it drops
out. Cut cable ties if necessary to
pull switch out. Tag wires and use
a soldering iron of 50 watts maxi-
mum to remove wires from switch
terminals.
(2) To install new LATCH/NON-LATCH
switch, use a soldering iron of
50 watts maximum to connect
wires to switch terminals. Replace
any cable ties that were cut for
switch removal. Place keyed
washer over switch. Ensure that
tang on washer projects forward so
it will engage hole in panel under
switch hole. Insert switch through
hole in panel from the rear. Place
lock washer and hex nut over
threaded portion of switch; tighten
hex nut to secure switch.
(3) Turn on switch S1 on power supply.
Depress TRANSMITTER RESYNC
switch S2. Wait about 5 minutes
for system to stabilize. Turn mode
switch to TEST/RESET and then
to SECURE.
p.
Turn mode switch to SECURE. Set LATCH/
NON-LATCH switch, S5, to LATCH.
Set multimeter to ohms and connect
leads to TB6, terminals S1-D and
S1-DR. Meter should indicate less than
2,000 ohms.
q.
Remove and then reconnect wire on
TB8-F-1. Meter should indicate more
than 100,000 ohms until mode switch
is turned to RESET.
5-74
