Garmin GTN 725 Cockpit Reference Manual page 78

All manuals and user guides at all-guides.com
Message
CDI/HSI FLAG -
The Main Lateral
Superflag or Main
Main lateral/
Vertical Superflag
vertical flag
output has been turned
on CDI/HSI is
off due to an over-
inoperative.
current condition.
CDI SOURCE -
Aircraft is on a GPS
approach but CDI is set
Select appropriate
to VLOC, or aircraft is
CDI source for
on VLOC approach and
approach.
CDI is set to GPS and
aircraft is less than
2 nm from the FAF.
COM RADIO -
Com radio is locked to
121.5 MHz.
Com locked to
121.5 MHz. Hold
remote com
transfer key to exit.
COM RADIO -
Com radio is
in overtemp or
Com overtemp
undervoltage mode
or undervoltage.
and transmitting power
Reducing
has been reduced to
transmitter power.
prevent damage to the
com radio. Radio range
will be reduced.
COM RADIO -
The com radio is not
communicating properly
Com radio may be
with the system.
inoperative.
68
Description
Verify course guidance is valid
and correct by crosschecking with
the GTN on-screen CDI and other
navigational equipment. Contact
dealer for service.
Select the appropriate CDI source
for approach.
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.
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.
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.
GTN 725/750 Cockpit Reference Guide
Action
190-01007-04 Rev. K