Quantcast Table 5-1. Troubleshooting Procedures - continued - TM-5-6350-264-14-P-30025

 

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Table 5-1. Troubleshooting Procedures - continued - TM-5-6350-264-14-P-30024
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TM-5-6350-264-14-P-3 Receiver Passive Signal Ultrasonic R-1860/FSS-9(V) Processor Passive Signal Ultrasonic TMX-9442/FSS-9(V) Manual
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Table 5-1. Troubleshooting Procedures - continued - TM-5-6350-264-14-P-30026
TM 5-6350-264-14&P-3
NAVELEX EE 181-AA-OMI-040/E121 R1860 M9443
TO 31S9-2FSS9-1-3
Table 5-1. Troubleshooting Procedures - Continued
Trouble
Probable cause
Corrective action
1. (cont)
f. (cont)
(6)
Adjust the gain control per steps
in TM 5-6350-264-14/1.
NOTE
Probable cause g.
applies only if the
Ultrasonic Motion
Sensor and the
Passive Ultrasonic
Sensor are oper-
ated together.
g. No SYNC pulse from
a. Set oscilloscope as follows:
the J-SIIDS Ultra-
volts/division
@ 0.5 v
@ 50 sec
sonic Motion
time/division
Sensor (TM 5-
trigger source
@ internal
6350-264-14/2
trigger level
@ auto
& P) to the notch
and connect leads to TB2-7 and
filter in the Pro-
TB2-8. The scope should display
cessor.
the SYNC pulse as a sawtooth
pattern of 1.5 to 10 v p-p and
approximately 26.3 kHz.
b. If the SYNC pulse signal is not correct,
disconnect wires from TB2-7 and
TB2-8. Connect 0-scope leads to
these wires and check the signal on
the wires.
(1)
If the signal, as displayed on the
0-scope, is not correct on these
wires, refer to TM 5-6350-264-
14/2 & P on J-SIIDS Ultrasonic
Motion Sensor.
(2)
If the signal at the Ultrasonic
Motion Sensor is correct, check
interconnecting wires for open
circuits or shorts-to-ground.
(3)
To check for a grounded circuit,
disconnect wires from TB2-7
and TB2-8 in the Processor of
the Ultrasonic Motion Sensor
and the Passive Ultrasonic Sen-
sor. Set multimeter to ohms,
and check between each wire
and shield. An indication of
5-7

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