TM 5-6350-264-14&P-9
NAVELEX EE 181-AA-OMI-100/E121 DZ-204
T. O. 31S9-2FSS9-1-9
Turn the operating mode switch to ACCESS.
(1)
If the AA is silent, put on ear
protection and open the AA door
Pull the TAS plunger all the way out.
Remove
screws
that
secure
faceplate, and remove faceplate
Turn off power switch located in the
upper left corner of the AA Tag,
disconnect, and insulate speaker
wire from TB3-7.
(2)
If the AA continues to sound, tag,
disconnect, and insulate green wire
(from status processor) from TB4-1
in the Control Unit
Install a jumper
between
TB4-4
and
TB4-1
AA
should be silenced Put on ear
protection and open AA door Pull
the TAS plunger all the way out
Remove screws that secure the
faceplate, and remove the faceplate.
Turn off power switch located in
the upper left corner of the AA. Tag,
disconnect, and insulate speaker
wire from TB3-7 in the Control Unit,
remove the AA interconnecting wire
from TB4-3 and connect a jumper
wire from TB4-4 and TB43 Turn on
power switch in AA. The AA
speaker is now disabled
and
maintenance
and
troubleshooting may be performed.
(3)
When
maintenance
or
troubleshooting
has
been
completed, turn off power switch in
AA In the Control Unit, remove
jumper wire from TB4-4 and TB4-3
Connect AA interconnecting wire to
TB4-3 In the AA, connect speaker
wire to TB3-7; turn on power switch
Install and secure faceplate Close
door on AA On Control Unit, turn
operating mode switch to TEST/
RESET and then to SECURE.
g
Inspect
varistors
for
evidence
of
physical
damage or overheating Disconnect one lead
from each varistor from TB1. Set multimeter to
ohms and connect one lead to each varistor lead
Meter should indicate over 100, 000 ohms.
Check both varistors.
h
Refer to figure 5-1 for all test points found in
troubleshooting table 5-1 Figure 5-2 is a wiring
diagram of the Audible Alarm Step-by-step
troubleshooting procedures, including Trouble,
Probable Cause, and Corrective Action, are
listed in table 5-1.
5-3
