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
1.
(Cont)
g. (Cont)
Secure bracket and stop to switch
with lock washer and small hex nut.
Insert lock through hole in CU
door; slip spacer over lock. Slip
switch arm over switch shaft. En-
sure that arm is aligned with tang
on switch stop. Place large hex nut
inside switch mounting bracket; En-
gage switch shaft in lock. 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.
During 5-minute stabilization per-
iod, check power supply. Set mul-
timiter to dc volts and connect neg-
ative lead to chassis (ground). Con-
nect 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 SE -
CURE.
2.
Nuisance
a. Bad tamper
a.
Close CU door. Ensure that there is no
alarms.
switch.
debris of any sort between door and en-
closure. Ensure that door and enclosure
are not warped or bent. Ensure that door
closes tightly.
b.
Open CU door. Set multimeter to dc
volts and connect positive meter lead to
PC board A7, TP1 (brown), and negative
lead to chassis (ground). Push TAS plun-
ger all the way in, and then pull plunger
all the way out. Meter should indicate
less than 0.5 vdc for both switch posi-
tions. Depress TAS plunger and then re-
lease. Meter should indicate 18.5 to
21 vdc.
5-35
