TM 5-6350-264-14&P-10
NAVELEX EE 181-AA-OMI-110/E121 C-9412
T.O. 31S9-2FSS9-1-10
Table 5-1. Troubleshooting Procedures - Continued
Trouble
Probable cause
Corrective action
1. (Cont)
e. (Cont)
supply. Turn board so plastic ejec-
tor is toward top. Align board with
guides at top and bottom of status
processor. Slide board straight in
until it contacts receptacle at back
of processor. Then press firmly on
board until it seats completely in
receptacle.
(2)
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.
f.
Bad Audible
NOTE
Alarm (AA)
circuit.
Ensure there is no jumper from TB4-1
to TB4-4. Remove AA wire from TB4-3.
Remove green wire from TB4-1. Connect
jumper wire from TB4-3 to TB4-4
a.
Turn mode switch to TEST/RESET. Set
multimeter to dc volts. Connect positive
meter lead to TB4-1 and negative meter
lead to TB4-2.
b.
If meter indicates less than 1 vdc, connect
positive meter lead to mode switch S3,
terminal 3-2, and negative lead to chassis.
c.
If meter indicates less than 1 vdc, inspect
wiring from mode switch S3, terminal 3-2
to power supply TB2-5 for loose or
broken connections. Resoled any bad
connections.
d.
If meter indicates 5 +0.25 vdc, connect
positive meter lead to S3, terminal 3-4.
e.
If meter indicates less than 1 vdc, replace
mode switch S3.
(1)
To remove mode switch, turn off
switch S1 on top of power supply.
Remove large hex nut that secures
5-29
