NAVELEX EE 181-AA-OMI-110/E121 C-9412
Table 5-2. Troubleshooting Procedures - Continued
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 sold-
ering iron of 50 watts maximum to
connect wires to switch terminals.
Slip mounting bracket 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 brac-
ket 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 nut to secure switch.
(3) Turn on switch S1 on power supply.
Depress TRANSMITTER RESYNC
switch S2. Wait about 5 minutes
for system to stabilize. Turn mode
switch to TEST/RESET and then
If meter indicates 20 ± 1 vdc at S3, terminal
2-1, replace PC board A10.
(1) To remove PC board A10, turn off
switch S1 on top of power supply.
Place thumb or finger under board
ejector and lift up until board pops
out of receptacle at back of status
processor. Then grasp PC board
and pull straight out.