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
8.
(Cont)
Bad alarm
o.
Turn mode switch to ACCESS. If meter
identification
indicates 20 ±1 vdc at S3, terminal
circuitry.
2-3, replace mode switch S3.
(Cont)
(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 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. Se-
cure 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 bracket; slip
bracket over lock. Engage
switch shaft in lock. Tighten
unit to secure switch.
5-110
