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
1.
(Cont)
e.
(Cont)
b.
If there are no alarms indicated at any
test point, turn mode switch to SE-
CURE. Set multimeter to ohms and
connect leads to TB6, terminals S1-I
and S1-IR. Meter should indicate less
than 2,000 ohms.
c.
If meter indicates more than 100,000
ohms, remove PC board A10. To re-
move 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.
d.
Turn on switch S1 on top of power sup-
ply. Depress TRANSMITTER RESYNC
switch S2. Wait about 5 minutes for sys-
tem to stabilize. Turn mode switch to
TEST/RESET and then to SECURE.
Connect meter leads to J10-13 and 14.
If meter indicates less than 2,000 ohms,
replace PC board A10. If meter indicates
more than 100,000 ohms, replace PC
board A9.
(1) To remove PC board A9, 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 boards A9 and
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 contacts receptacle at back
of processor, then press firmly on
board until it seats completely in
receptacle.
e.
Turn on switch S1 on top of power sup-
ply. Connect meter leads to TB6, termi-
nals S1-D and S1-DR. Meter should indi-
cate less than 2,000 ohms.
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