190-01263-01 Rev. A
Garmin G2000 Pilot’s Guide for the Cessna T240
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Audio And CnS
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4.6 AbnorMAl operAtion
Abnormal operation of the G2000 includes equipment 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 Touchscreen Controller to advise the pilot of a stuck microphone.
The
MIC
Button Annunciator flashes as long as the PTT Key remains stuck.
Figure 4-60
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 yellow X may appear on the
frequency display.
Figure 4-61 COM Tuning Failure
Emergency Channel
Loaded Automatically
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