Garmin Flight Deck 100 Marine Instruments User Manual


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190-00728-04 Rev. A
Embraer Prodigy
®
Flight Deck 100 Pilot’s Guide
167
AUDIO PANEL AND CNS
4.7 ABNORMAL OPERATION
Abnormal operation of the system includes failures of the system components and failure of associated
equipment,includingswitchesandexternaldevices.
STUCK MICROPHONE
Ifthepush-to-talk(PTT)Keybecomesstuck,theCOMtransmitterstopstransmittingafter35secondsof
continuousoperation.AnalertappearsonthePFDtoadvisethecrewofastuck microphone.
The
COM1 MIC
or
COM2 MIC
Key Annunciator on the Audio Panel flashes as long as the PTT Key remains
stuck.
Figure 4-55 Stuck Microphone Alert
COM TUNING FAILURE
IncaseofaCOMsystemtuningfailure,theemergencyfrequency(121.500MHz)isautomaticallytunedin
theradioinwhichthetuningfailureoccurred.Dependingonthefailuremode,aredXmayappearonthe
frequency display.
Figure 4-56 COM Tuning Failure
Emergency Channel
Loaded Automatically
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