Quantcast Table 5-1. Troubleshooting Procedures - Continued - TM-5-6350-264-14-P-40027

 

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Table 5-1. Troubleshooting Procedures - Continued - TM-5-6350-264-14-P-40026
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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-40028
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
3. (cont)
a. (cont)
(2)
To install new PC board, turn the
PC board so TB1 is adjacent to
the conduit entrance holes and
place the board in the chassis.
Secure the board to the chassis
with screws, and connect wires
to  TB1  and  TB2.
Adjust
sensitivity
control
per
instructions in TM 5-6350-264-
14/1.
b. Bad interconnecting
a.
If voltage is normal with wires
wiring.
disconnected  from  TB2-1  and
TB2-2, check wiring for shorts-to-
ground.
b.
To check for a grounded circuit,
disconnect wires from TB2-1 and
TB2-2 in the Processor and from
TB1-1 and TB1-2 in the Detector.
Set multimeter to ohms, and check
between the wires and conduit. An
indication of infinity means a good
wire. Any indication of less than
infinity means a short-to-ground.
c. Bad Detector PC
c.
Replace any bad wiring.
board.
a.
If voltage at TB2-1 and TB2-2 is
normal and wiring checks good,
disconnect wire from TB1-7 in the
Processor; reconnect wires to TB1-
1 and TB1-2 in the Detector; and
set multimeter to ohms.
Use
meter to check between wires
removed from TB2-1 and TB2-2.
The meter should indicate some
value of resistance for one polarity
and some value of resistance
several times higher or lower for
the other polarity.
b.
Connect the wires to TB1-7, TB2-1
and TB2-2 in the Processor. Set
the meter to dc volts.  In the
Detector, connect positive meter
lead to TB1-1 and negative meter
lead to TB1-2. Check for 5.3 0.5
Vdc.
5-12

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