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Page 6-6
400W Series Installation Manual
Rev. G
190-00356-02
Alert Text
Possible Cause
Solution
G/S is not responding
(430W only)
•
Internal system-to-system
communication between the
main processor and the
glideslope receiver has failed.
Operational status of the
glideslope receiver is unknown.
•
Contact Garmin technical
support.
G/S needs service
(430W only)
•
The unit has detected a failure
in its glideslope receiver. The
glideslope receiver may still be
usable.
•
Contact Garmin technical
support.
GAD configuration required
•
The GAD 42 Interface Adapter
has lost the configuration
information stored in its internal
memory. Any mechanical
indicators connected to your
400W- series unit are unusable.
•
Reconfigure the GAD 42 unit.
Refer the GAD 42 Installation
Manual (P/N 190-00159-00)
GAD needs service
•
The 400 Series unit has
detected a failure in the GAD 42
interface adapter. Any
mechanical indicators
connected to your unit are
unusable.
•
Refer to section 5.2.3 of the
GAD Installation Manual
(P/N 190-00159-00)
•
Check for proper configuration
•
Check wiring
GDL 69 is not responding
•
No data is being received from
the GDL 69.
•
Contact Garmin technical
support.
•
GPS antenna cable is shorted.
•
Verify that the center
conductor is not shorted to the
braid in the coaxial cable.
GPS is not responding – (main
software version 3.11 and earlier)
GPS is not responding – check
GPS antenna (main software
version 3.20 and later).
•
Internal system-to-system
communication between the
main processor and the GPS
receiver has failed. Operational
status of the GPS receiver is
unknown.
•
Contact Garmin technical
support.
GPS needs service
•
The 400W Series unit has
detected a failure in its GPS
receiver.
•
Contact Garmin technical
support.
•
A valid value of magnetic
variation is not available for this
location.
Large magnetic variance
•
Verify all course angles
•
Contact Garmin technical
support.
Summary of Contents for GNC 420AW
Page 2: ...400W Series Installation Manual 190 00356 02 Rev G ...
Page 149: ...400W Series Installation Manual Page C 1 190 00356 02 Rev G Appendix C RESERVED ...
Page 206: ...Page H 30 400W Series Installation Manual Rev G 190 00356 02 Figure H 17 GTX 330 Interconnect ...
Page 212: ...Page H 36 400W Series Installation Manual Rev G 190 00356 02 Figure H 21 RMI OBI Interconnect ...
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