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
7.
(Cont)
Bad PC board A8,
h.
If meter indicates 0 v, connect positive
or mode switch
lead to S3, terminal 2-4.
S3. (Cont)
i.
If meter indicates 20 ±2 vdc, replace
mode switch S3.
(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
bracket together. Be careful
not to lose switch arm because
it is not secured to switch shaft.
Remove spacer and lock from
door so no items will be lost.
Remove 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 maximum to remove
them from switch terminals.
(2) To install new mode switch, use a
soldering iron of 50 watts max-
imum to connect wires to switch
terminals. Slip mounting brac-
ket and switch stop over switch
shaft. Ensure that notch in
mounting bracket fits over tab
on switch body, and that the
tang on switch stop engages
notch in mounting bracket.
Secure bracket and stop to
switch with lock washer and
small hex nut. Insert lock
through hole in CU door; slip
spacer over lock. Slip switch
arm over switch shaft. Ensure
that arm is aligned with tang
on switch stop. Place large
hex nut inside switch mounting
5-97
