59
190-01004-04 Rev. N
GTN 625/635/650 Cockpit Reference Guide
Me
ssage
s
Message
Description
Action
COM RADIO -
COM locked to
121.5 MHz. Hold
remote COM
transfer key to exit.
COM radio is locked to
121.5 MHz.
The external COM remote transfer
(COM RMT XFR) switch has been
held and the COM radio is tuned
to 121.5. To exit this mode, hold
the COM remote transfer (COM
RMT XFR) switch for two seconds.
COM RADIO -
COM overtemp
or undervoltage.
Reducing
transmitter power.
COM radio is
in overtemp or
undervoltage mode
and transmitting power
has been reduced to
prevent damage to the
COM radio. Radio range
will be reduced.
Decrease length of COM
transmissions, decrease cabin
temperature and increase cabin
airflow (especially near the GTN).
Check aircraft voltage and reduce
electrical load as necessary.
Contact dealer for service if this
message persists.
COM RADIO -
COM radio may be
inoperative.
The COM radio is not
communicating properly
with the system.
Press and hold the volume knob or
the external COM remote transfer
(COM RMT XFR) switch, if installed
– this will force the COM radio
to 121.5 MHz. Contact dealer for
service.
COM RADIO -
COM radio needs
service.
The COM radio is
reporting that it needs
service. The COM
radio may continue to
function.
Cycle the power to the COM radio.
Contact dealer for service.
CONFIGURATION
-
Terrain/TAWS
configuration is
invalid. GTN needs
service.
TAWS is inoperative
due to a configuration
problem with the GTN.
This message will be
accompanied by a TER
FAIL annunciation.
Contact dealer for service.
Summary of Contents for GTN 625
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