Quantcast Table 5-1. Troubleshooting Procedures - Continued - TM-5-6350-264-14-P-20022

 

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Table 5-1. Troubleshooting Procedures - Continued - TM-5-6350-264-14-P-20021
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TM-5-6350-264-14-P-2 Transceiver Ultrasonic Motion Signal RT-1 161 / FSS-9(V) NSN
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Table 5-1. Troubleshooting Procedures - Continued - TM-5-6350-264-14-P-20023
TM 5-6350-264-14&P-2
NAVELEX EE181-AA-OMI-030/E121 RT1161 M9443
T.O. 31S9-2FSS9-1-2
Table 5-1. Troubleshooting Procedures - Continued
Trouble
Probable cause
Corrective action
1. (cont)
d. (cont)
b. Use a straightedge across the Processor
chassis to hold TAS plunger down.
Slowly raise the straightedge to
simulate opening the cover. After a
movement of less than 1/4 inch
(0.635 cm), the meter indication
should change to over 100,000 ohms.
c. If the TAS on any unit fails, replace
the PC board in that unit.
(1)
To remove Transceiver PC board,
tag and disconnect wires from
TB1. Disconnect transducer
leads from PC board. Discon-
nect black ground lead from PC
board. Remove screws that
secure PC board. Remove PC
board.
(2)
To install new PC board, shift
board off center toward receive
transducer (blue dot). Align
single screw hole in board with
screw hole in center of receive
transducer mount. Ensure that
black ground wire is not caught
under board. Insert screws
through PC board and tighten
them to secure board. Connect
wires to TB1. Connect trans-
ducer leads and black ground
lead to PC board.
(3)
Recalibrate the system per steps
in TM 5-6350-264-14/1.
(4)
To remove Processor PC board,
tag and disconnect wires from
TB1 and TB2. Remove screws.
Remove PC board.
(5) To install new PC board, orient
the board so the terminal strips
are adjacent to the conduit en-
trance holes. Secure the PC
board to the chassis with screws.
Connect wires to TB1 and TB2.
5-6

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