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)
f. (Cont)
d.
If meter indicates 0 volts, replace PC board
A10.
(1) 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.
(2) To install new PC board A10, 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 con-
tacts receptacle at back of proces-
sor. Then press firmly on board un-
til 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 posi-
tive 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.
e.
If meter indicates 19 ±2 vdc at S5, terminal
8, connect positive meter lead to S5,
terminal 2 (green wire) and then termi-
nal 9 (orange wire).
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