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190-01553-01 Rev. C
Garmin GTR 200 Pilot’s Guide
15
GTR 200
TROUBLESHOOTING
Problem Possible Cause Action
GTR 200 does not power on No power to the
GTR 200
Check power connections,
breakers, and main
avionics switch
Faulty electrical
wiring or connection
Perform electrical system
test
GTR 200 does not transmit No power to COM Check power connections
Mic key connection Check Mic key input
connection
Intercom doesn’t function It can be enabled
or disabled via
configuration mode
Check connections. Refer
to the installation manual
for wiring and headset
test procedures.
No voice activation,
or if must talk too
loud
Check ICS SQ and ICS
VOL levels on the menu
page
A headset that has
a MIC Telephone
switch option turned
on
On the headset, turn the
MIC Telephone switch
to the Off position, and
power cycle the GTR200