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)
d.
(Cont)
(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 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.
(3) Turn on switch S1 on power supply.
Depress TRANSMITTER RESYNC
switch S2. Wait about 5 minutes
for system to stabilize. Turn mode
switch to TEST/RESET and then
to SECURE.
r.
Set multimeter to dc volts and connect posi-
tive lead to A10, TP1 (brown) and neg-
ative lead to chassis. Turn mode switch
to SECURE. Ensure that no intrusion
or tamper alarms are activated. At
power supply, remove fuse F2. Meter
should indicate 1 vdc or less. Reinstall
F2. Meter should indicate 18.5 to 21
vdc.
s.
If these indications are not correct, replace
PC board A7.
(1) To remove PC board A7, 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 A7, 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 receptacle.
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