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)
t.
Set multimeter to ohms and connect leads to
TB6, terminals S1-D and S1-DR. Press
and release TAS.
u.
If meter indicates less than 2,000 ohms, re-
move PC board A8.
To remove PC board A8, 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.
v.
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.
w.
Set meter to dc volts and connect positive
leads to J8-11 and negative lead to
chassis.
x.
If meter indicates 1 vdc or less, 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.
(3) Turn on switch S1 on power supply.
Depress TRANSMITTER RESYNC
switch S2. Wait about 5 minutes
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