Garmin GFC 600 User Manual

GFC 600 AFCS Part 23 AML STC Maintenance Manual Page 23
190-01938-00 Revision 13
5. Troubleshooting
This section provides information to assist with troubleshooting if problems occur. See the GFC
600 AFCS Configuration Log retained in the aircraft permanent records for a list of the
interfaced equipment and system configuration data. When troubleshooting the GFC 600
AFCS, refer to the interconnect diagrams retained with the aircraft permanent records.
Before troubleshooting the GFC 600 AFCS, ensure that system configuration settings match
those recorded in the completed GFC 600 AFCS Configuration Log that is retained in the
aircraft permanent records.
5.1 GMC 605 Configuration Mode Test Faults
During initial installation, or during certain periodic maintenance tasks, there may be tests done
in configuration mode. During these tasks, there could be fault messages displayed. Refer to
Table 5-1 below for troubleshooting steps.
Table 5-1 – Configuration Mode Test Faults
Procedure
Annunciated Fault
Possible Cause
Troubleshooting
Approach
Engine Run-Up test
OR
Pitch/Roll Offset
Calibration test
TEST FAILED:
TIMEOUT
Data communications
failure
Check system wiring.
TEST FAILED:
INVALID READY
STATE
Mounting orientation in
configuration is incorrect or
the sub-procedure is not
known
Ensure that configuration
settings are the same as
those retained with the
aircraft records.
TEST FAILED:
AIRCRAFT IN
MOTION
Aircraft is moving, or
incorrect sensor calibration,
or sensor failure, or
incorrect air data
information.
Make sure that GMC
605 rack is mounted as
shown in the Installation
manual
Verify valid GPS or air
data is available to the
GMC.
TEST FAILED: GRS
NOT CALIBRATED
Sensor calibration is not
done. Inertial and
temperature sensor
calibration data may be
corrupted.
Contact Garmin Aviation
Product Support using
the contact information
in Section 1.7
TEST FAILED:
UNKNOWN
FAILURE
AHRS provided invalid
failure code
Contact Garmin Aviation
Product Support using
the contact information
in Section 1.7

Garmin GFC 600 Specifications

General

System Type	Digital Autopilot System
Control Wheel Steering (CWS)	Yes
Yaw Damper	Optional
Automatic Trim	Yes
Vertical Navigation (VNAV)	Yes
Level Change (LVL) Mode	Yes
Flight Director	Yes
Safety Features	Overspeed Protection (OSP)
Interface	Interfaces with Garmin navigators and displays
Aircraft Type	Certified aircraft
Control Modes	Includes heading hold, altitude hold, vertical speed, and navigation tracking
Integration	Seamless integration with Garmin avionics
Approval	Certified