Quantcast Table 5-1. Troubleshooting Procedures - Continued - TM-5-6350-264-14-P-20039

 

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Table 5-1. Troubleshooting Procedures - Continued - TM-5-6350-264-14-P-20038
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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-20040
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
3. (cont)
e. (cont)
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. No alarms.
a. Bad Processor PC
a. Remove wires from TB1-1 and TB1-2
board or bad
in the Processor. Set multimeter to
interconnecting
ohms and connect meter leads to
wiring.
TB1-1 and TB1-2. Meter should
indicate less than 2,000 ohms.
b. Remove wire from TB1-7 in the Pro-
cessor. The meter indication should
be over 100,000 ohms.
c. If the meter does not match these
indications, replace the Processor
PC board.
d. Set multimeter to ac volts. Check be-
tween noise TP and reference TP.
Meter should indicate less than 0.15 vac.
e. If meter indicates higher than 0.15
vac, disconnect wires from TB2-3
and TB2-4.
f. If meter still indicates higher than 0.15
vac, replace Processor PC board.
(1)
To remove Processor PC board,
tag and disconnect wires from
TB1 and TB2. Remove and
keep seven screws. Remove PC
board.
(2)
To install new PC board, orient
the board so the terminal strips
are adjacent to conduit entrance
holes. Secure the PC board to
the chassis with seven screws.
Connect wires to TB1 and TB2.
5-23

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