Garmin 500W Series, Instructions Manual

Page: 14 / 23

500W Series 190-01226-03 Rev. 5
Instructions for Continued Airworthiness Bell 206B Page 14 of 23
Alert Text Possible Cause Solution
CDI key stuck

The CDI key is stuck in the enabled
(or “pressed”) state. Try pressing the
CDI key again to cycle its operation.

Contact Garmin technical
support.
CDI key disabled

“Ignore CDI key” has been selected on
the MAIN CDI/OBS CONFIG page.

Go to the MAIN CDI/OBS
CONFIG page and deselect
“Ignore CDI key”
Check unit cooling

The 500W Series unit has detected
excessive display backlighting
temperature. The backlighting has
been automatically dimmed to reduce
the temperature.

Check for adequate ventilation
or check cooling airflow. Refer
to Section 2.7 of the
Installation Manual.
COM has failed (530W
only)

The unit has detected a failure in its
communications transceiver.

Contact Garmin technical
support.
COM is not responding
(530W only)

Internal system-to-system
communication between the main
processor and the COM transceiver
has failed. Operational status of the
COM transceiver is unknown.

Contact Garmin technical
support. If the COM board is
still working, it will
automatically tune to 121.500
MHz. Transmit and receive
functions may still operate
regardless of the displayed
frequency.
COM needs service
(530W only)

The unit has detected a failure in its
communications transceiver. The
COM transceiver may still be usable.

Contact Garmin technical
support
COM push-to-talk key
stuck (530W only)

The external push-to-talk (PTT) switch
is stuck in the enabled (or “pressed”)
state.

Try pressing the PTT switch
again to cycle its operation.

Wiring is incorrect.

Check Wiring
COM remote transfer
key is stuck (530W
only)

The remote COM transfer switch is
stuck in the enabled (or “pressed”)
state.

Try pressing the switch again
to cycle its operation.

Verify the wiring is correct.

If the message persists,
contact Garmin technical
support.
COM transfer key stuck
(530W only)

The COM flip-flop key is stuck in the
enabled (or “pressed”) state.

Try pressing the switch again
to cycle its operation.

If the message persists,
contact Garmin technical
support.
COM transmitter power
has been reduced
(530W only)

The unit has detected excessive unit
temperature. The COM transceiver
transmit power has been automatically
reduced to compensate for the
condition.

Check for adequate ventilation
or check cooling airflow.
Refer to Section 2.7 of the
Installation Manual.

Insufficient voltage level

Check the input voltage
Configuration error -
Config service req’d

The configuration information has
been lost or corrupted.

Reconfigure the unit