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)
b. (Cont)
and bottom of status proces-
sor. Slide board straight in
until it contacts receptacle at
back of processor. Then press
firmly on board until it seats
completely in receptacle.
i.
If meter indicates over 100, 000 ohms at
J7-1 and J7-14, connect meter eads
to J7-14 and TB4-3 in power supply.
Meter should indicate 0 ohms.
j.
If meter indicates over 100,000 ohms, in-
spect J12/P1, pin 17 for broken or
loose connections. Resolder any bad
connections at P1, pin 17.
k.
Connect meter leads to J7-1 and TB4-2 in
power supply. Meter should indicate
0 ohms.
l.
If meter indicates over 100, 000 ohms, in-
spect J12/P1, pin 34 for broken or
loose connections. Resolder any bad
connections at P1, pin 34.
m.
Turn on switch S1 on power supply. De-
press TRANSMITTER RESYNC
switch S2. Wait about 5 minutes for
system to stabilize. During 5-minute
stabilization period, check power sup-
ply. Set multimeter to dc volts and
connect negative lead to chassis
(ground). Connect positive lead to
power supply, TB2-3. Meter should in-
dicate 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.
n.
Reconnect Data Transmitter or Monitor
Cabinet wires to TB6 S1-D and S1-DR.
5-55
