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Page Title:
Table 5-1. Troubleshooting Procedures - Continued |
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 TM 5-6350-264-14&P-11
NAVELEX EE 181-AA-OMI-120/E121 C-7359-40-1
T.O. 31S9-2FSS9-1-11
Table 5-1. Troubleshooting Procedures - Continued
Trouble
Probable cause
Corrective Action
10. (Cont)
b.
Defective intercon-
Connect positive meter lead to TB1-2
necting wiring.
and negative meter lead to TB1-4
on Signal Module. Meter should in-
dicate 22 vac. If meter does not in-
dicate 22 vac, check interconnect-
ing wiring for breaks or loose con-
nections.
11. Signal Module
a.
Defective intercon-
Set multimeter to dc volts. Connect
lights flashing
necting wiring.
positive meter lead to audible sig-
and audible signal
nal device DS1 (+) and negative
device silent.
meter lead to DS1 (-). Meter
should indicate 19.5 vdc. If meter
does not indicate 19.5 vdc, check
wiring from logic subassembly
printed wiring board to DS1. Re-
pair or replace defective wiring.
b.
Defective audible
If meter indicates 19.5 vdc, connect a
signal device DS1
jumper between TB1-4 on Signal
on Signal Module.
Module and DS1 (-). Alarm should
be heard. If alarm is not heard, re-
place DS1. If alarm is heard, re-
place Signal Module.
(1)
To remove DS1, tag wires, un-
screw terminal screws, and
disconnect wires from DS1.
Unscrew knurled nut and
and slide DS1 from Signal
Module.
(2)
To install new DS1, position
DS1 in Signal Module and
install knurled nut. Con-
nect wires to terminals and
install terminal screws.
Close and lock Monitor
Cabinet door.
(3)
To remove Signal Module, tag
and remove wires from ter-
minal board TB1, located
on back of Signal Module.
Remove the mounting
screws and remove Signal
Module.
5-20
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