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
6.
(Cont)
Improper
lead to TB2-5. Meter should
operation of
indicate 5 ±0.25 vdc. Connect
audible signal
lead to TB2-2. Meter should
device. (Cont)
indicate 28 ±2 vdc. Turn mode
switch to TEST/RESET and
then to SECURE.
f.
Connect positive meter lead to J8-14 and
negative meter lead to chassis. If
meter indicates 5 ±0.25 vdc, re-
place PC board A8.
To install new PC board A8, turn
off switch S1 on power sup-
ply. Turn board so plastic ejec-
tor is toward top. Align board
with guides at top and bottom
of status processor. Slide board
straight out until it contacts re-
ceptacle at back of processor.
Then press firmly on board un-
til it seats completely in recep-
tacle.
g.
If meter indicates less than 1 vdc at J8-14,
replace PC board A9.
(1) To remove PC board A9, turn off
switch S1 on top of power sup-
ply. Place thumb or finger un-
der board ejector and lift up
until board pops out of recep-
tacle at back of status processor.
Then grasp PC board and pull
straight out.
(2) To install new PC board A9, turn
board so plastic ejector is to-
ward top. Align board with
guides at top and bottom of
status processor. Slide board
straight in until it contacts re-
ceptacle at back of processor.
Then press firmly on board un-
til it seats completely in re-
ceptacle.
5-91
