Quantcast Table 5-1. Troubleshooting Procedures - Continued - TM-5-6350-264-14-P-40020

 

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Table 5-1. Troubleshooting Procedures - Continued - TM-5-6350-264-14-P-40019
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TM-5-6350-264-14-P-4 Detector Vibration Signal DT-546/FSS-9(V) NSN
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Table 5-1. Troubleshooting Procedures - Continued - TM-5-6350-264-14-P-40021
TM 5-6350-264-14&P-4
NAVELEX EE 181-AA-OMI-050/E121 DT546 M9442
TO 31S9-2FSS9-1-4
Table 5-1. Troubleshooting Procedures - Continued
Trouble
Probable cause
Corrective action
1. (cont)
b. (cont)
indication should change to over 100,
000 ohms. Pull the TAS plunger all the
way out.  The meter indication should
drop to its former level.  Close cover.
Repeat this test on the remaining
d.
Use  a  straightedge  across  the
Processor chassis.  Slowly raise the
straightedge.  After a movement of
less than 1/4 inch (0.635 cm), the
meter indication should change to over
100,000 ohms. Replace cover.
e.
If the TAS in any unit fails, replace the
PC board in the failing unit.
(1)
To remove Processor PC board, tag
and disconnect wires from TB1 and
TB2. Remove screws that secure PC
board to chassis. Lift PC board out of
chassis.
(2)
To install new PC board, orient board
so the terminal strips are adjacent to
conduit entrance holes. Secure the PC
board to chassis with screws. Connect
wires to TB1 and TB2.
Adjust
sensitivity control per instructions in
TM 5-6350-264-14/1.
(3)
To remove Detector PC board, tag and
disconnect
wires
from
TB1.
Disconnect red and black pick-up
assembly  wires  from  PC  board.
Remove screws that secure board to
chassis. Remove PC board.
(4)
To install new Detector PC board,
orient board so the terminal strip is
adjacent to the conduit entrance hole.
Secure the board to the chassis with
screws.  Connect wires to TB1, and
connect  red  and  black  pick-up
assembly  leads  to  the  marked
terminals on the board. Adjust
5-5

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