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)
g. (Cont)
negative lead to chassis. Meter should in-
dicate 20 1 vdc.
b.
Connect positive lead to S3, terminal 3-2.
Meter should indicate 5 +0.25 vdc.
c.
Turn mode switch to SECURE. Connect
positive meter lead to S3, terminal 1-2.
Generate a valid intrusion alarm by acti-
vating a sensor. Meter should indicate
18.5 to 21 vdc.
d.
If any of these indications are not correct,
inspect wiring for broken or loose connec-
tions. Resolder any bad connections.
e.
If wiring is good, replace mode switch S3.
(1)
To remove mode switch, turn off
switch S1 on top of power supply.
Remove large hex nut that secures
switch mounting bracket to inside
of CU door. Remove switch and
mounting bracket together. Be
careful not to lose switch arm be-
cause 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 brac-
ket and switch stop to switch shaft.
Remove mounting 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 maxi-
mum to connect wires to switch
terminals. Slip mounting bracket
switch stop over switch shaft. En-
sure that notch in mounting brac-
ket fits over tab on switch body,
and that the tang on switch stop
engages notch in mounting bracket.
5-34
