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
5. (Cont)
b. (Cont)
to power supply, TB2-3. Meter
should indicate 20 ± 1 vdc. Con-
nect 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 does not indicate less than 2,000
ohms, set multimeter to dc volts
and connect positive meter lead to
mode switch S3, terminal 2-2 and
negative meter lead chassis. Turn
mode switch to ACCESS.
f.
If meter indicates 0 volts, replace mode
switch.
g.
Connect positive meter lead to S3,ter-
minal 2-1 and negative meter lead
to chassis. Turn mode switch to
TEST/RESET.
h.
If meter indicates 0 volts, replace mode
switch.
(1) To remove mode switch, turn off
switch S1 on top of power sup-
ply. Remove large hex nut that
secures switch mounting brac-
ket to inside of CU door. Re-
move switch and mounting brac-
ket together. Be careful not to
lose switch arm because it is
not secured to switch shaft. Re-
move spacer and lock from door
so no items will be lost. Re-
move small hex nut and lock
washer that secures mounting
bracket and switch stop to
switch shaft. Remove mount-
ing bracket and switch stop.
Note that mode switch is a three
deck switch. Tag wires and use
a soldering iron of 50 watts max-
imum to remove them from
switch terminals.
5-85
