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)
e. (Cont)
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.
(3) Turn on switch S1 on power supply.
Depress TRANSMITTER RESYNC
switch S2. Wait about 5 minutes
for system to stabilize. During
5-minute stabilization period, check
power supply. Set multimeter to
dc volts and connect negative lead
to chassis (ground). Connect pos-
itive 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.
d.
Connect meter leads to TB6, terminals S1-I
and S1-IR. Meter should indicate less
than 2,000 ohms.
e.
Disconnect and then reconnect wire on
TB8-F-1. Meter should indicate more
than 100,000 ohms and then return to
less than 2,000 ohms 10 ±2 seconds
after wire is reconnected.
f.
If meter does not indicate more than
100,000 ohms with wire disconnected
from TB8-F-1, disconnect and then
reconnect wire on TB9-A-1.
g.
If meter does not indicate more than
100,000 ohms with wire disconnected
from TB9-A-1, set meter to dc volts
and connect negative lead to chassis.
Connect positive lead to mode switch
S3, terminal 1-3, and then 1-4. Meter
should indicate 18.5 to 21 vdc on both
switch terminals.
5-67
