TM 1-1510-224-MTF
b. Defective marker beacon volume control or sensitivity switch
on pedestal extension.
c. Defective VOR receiver.
K14.
ADF radio set inoperative.
No power to ADF radio set.
K15.
No ADF audio heard in headsets.
a. No power to equipment.
b. Defective ADF receiver.
c. Defective ADF control panel.
d. Defective ADF antenna.
K16.
Quality of ADF reception is poor.
a. Defective ADF control panel.
b. Defective audio control panel.
c. Defective ADF receiver.
d. Defective antenna.
K17.
Radar inoperative.
a. System circuit breaker tripped.
b. Defective radar receiver-transmitter.
c. Defective wiring.
K18.
Radar antenna does not scan.
a. No power to radar antenna.
b. Defective radar antenna.
K19.
No radar display on EHSI.
a. Defective radar receiver-transmitter.
b. Defective wiring.
K20.
No radar targets on EHSI or targets do not move TILT
control.
a. Defective radar receiver-transmitter.
b. Radar TILT control inoperative.
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