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
2. (Cont)
d. (Cont)
m.
If meter indicates 20 +1 vdc at TB2-3, turn
off switch S1 on power supply. Set
multimeter to ohms and connect leads
to TB2-3 and S3, terminal 2-4. Meter
should indicate 0 ohms.
n.
If meter does not indicate 0 ohms, inspect
wires from TB2-3 to S3, terminal 2-4
for broken or loose connections. Re-
solder any bad connections.
o.
To reinstall PC board A8, turn off switch S1
on top of power supply, turn board so
plastic ejector 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 re-
ceptacle.
p.
Turn on switch S1 on power supply. De-
press TRANSMITTER RESYNC switch
S2. Wait about 5 minutes for system to
stabilize. Turn mode switch to TEST/
RESET and then to SECURE.
e. Bad Pc
a.
Remove PC board A10.
board A10.
To remove PC board A10, turn off
switch S1 on top of power supply.
Place thumb or finger under board
ejector and lift up until board pops
out of receptacle at back of status
processor. Then grasp PC board
and pull straight out.
b.
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 supply. Set multi-
meter to dc volts and connect negative
lead to chassis (ground). Connect posi-
tive lead to power supply, TB2-3. Meter
should indicate 20 i1 vdc. Connect
positive lead to TB2-5. Meter should
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