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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
17. Audible signal
a.
Defective
Set multimeter to dc volts. Connect
device does not
interconnecting
positive meter lead to audible sig-
sound when lamps
wiring.
nal device DS1 (+) and negative
are flashing on
meter lead to DS1 (-). Meter
Status Monitor
indicate 19.5 vdc. If meter does
Module.
not indicate 19.5 vdc, check wir-
ing from logic subassembly printed
wiring board to DS1. Repair or re-
place defective wiring.
b.
Defective audible
If meter indicates 19.5 vdc, connect a
signal device DS1
jumper wire between TB1-4 on
on Signal Module.
Signal Module an DS1 (-). Alarm
should be heard. If alarm is not
heard, replace DS1. If alarm is
heard, replace Signal Module.
(1)
To remove DS1, unlock and
open Monitor Cabinet
door. Unlatch and swing
out mounting rack. Tag
wires, unscrew terminal
screws, and disconnect
wires from DS1. Unscrew
knurled nut 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 latch mounting
rack. Close and lock Mon-
itor Cabinet door.
(3)
To remove Signal Module, un-
lock and open Monitor
Cabinet door. Unlatch and
swing out mounting rack.
Tag and remove wires from
terminal board TB1, locat-
ed on back of Signal Mod-
ule. Remove the mounting
screws and remove Signal
Module.
5-29
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