Garmin 500W Series Instructions Manual page 14

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