Quantcast Table 5-1. Troubleshooting Procedures - TM-5-6350-264-14-P-50018

 

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Figure 5-1. Balanced Magnetic Switch, with Troubleshooting Test Points
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TM-5-6350-264-14-P-5 Switch Balanced Magnetic SA-1955( ) / FSS-9 (V) NSN
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Table 5-1. Troubleshooting Procedures-Continued - TM-5-6350-264-14-P-50019
TM 5-6350-264-14&P-5
NAVELEX EE 181-AA-OMI-060/E121 SA-1955
T.O. 31S9-2FSS9-1-5
NOTE
Troubleshooting procedures listed in table 5-1 may require more than one person to perform
corrective action.
Covers should be removed as necessary to perform troubleshooting procedures.
Never disconnect a wire without first marking that wire to assure proper reconnection.
Table 5-1. Troubleshooting Procedures
Trouble
Probable cause
Corrective action
1. Constant alarm
a. Bad PC board in Magnetic
a. With door or window closed, dis-
Switch Assembly.
connect wires from TB1-1 and
TB1-2. Set multimeter to ohms
and connect leads to TB1-1 and
TB1-2. Meter should indicate
less than 50 ohms.
b. If the meter indicates over 100,000
ohms across TB1-1 and TB1-2
with door or window closed,
adjust the bias magnet inside
the Magnetic Switch Assembly.
c. To adjust the bias magnet, loosen
the two screws that secure it to
the PC board, and slide it back
and forth.
d. If the meter indication does not
change to less than 50 ohms or
if the operation appears to be
erratic, replace the PC board.
e. To remove the PC board, tag and
disconnect the wires from TBl.
Remove two screws that secure
the bias magnet and two screws
that secure PC board to the hous-
ing. Remove the PC board.
f. To install new PC board, orient the
board so that the terminal strip is
on the side away from the
5-3

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