G1000 / GFC 700 System Maintenance Manual - 300/B300 Series King Air
Page 5-87
190-00716-01
Revision 1
5.26 GSR 56 Troubleshooting
Symptom Recommended
Action
No communication with GSR 56
•
Check power wiring and pin out of GSR 56 unit.
•
Ensure GSR 56 configuration option has been loaded.
No or low-quality Iridium signal
•
Ensure the Iridium antenna has an unobstructed view of satellite
constellation.
•
Check the Iridium antenna cable and connectors.
•
Verify antenna ground plane is adequate.
No audio output
•
Check wiring from GSR 56 toGDL 59.
•
Verify subscription with Garmin Flight Data Services (reference Section
7.27).
Unable to make a phone call
•
Verify signal quality is adequate
•
Verify communication between GSR 56 and the display/control device
•
Verify subscription with Garmin Flight Data Services (reference Section
7.27).
5.27 GTS 820/850 Troubleshooting
Problem
Cause
Solution
Unit does not power up – Data
failed message
Improper wiring; circuit breaker open
Ensure power is properly wired to the
GTS 8XX and the TRFC circuit
breaker is closed
Improper configuration
Verify that the GTS 8XX is configured
correctly for the desired display
Traffic Display erroneously
indicates TA at own ship position
Suppression bus I/O fault
Check the mutual suppression line to
ensure it is connected to the correct
pins at the GTS 8XX as well as the
installed transponder. Ensure there
are no fractures in the wire, and that
the suppression line is functioning
properly.
No Audio alerts
Improper wiring; Volume not set correctly
Ensure the audio is properly wired
from the GTS 8XX and volume is not
set too low
Calibration Fault
Factory calibration invalid
If the unit fails to go into operate
mode then return to Garmin for
service
Configuration Fault
Both internal and external configuration
checks failed
Verify the configuration
Verify wiring to the configuration
module and replace if necessary
FPGA Fault
Internal Fault
Return to Garmin for service
ROM Fault
Internal Fault
Return to Garmin for service
Execution Fault
Internal Fault
Return to Garmin for service
Electrical Fault
Internal Fault
Return to Garmin for service
Whisper Shout Fault
Internal Fault
Return to Garmin for service
Transmit Power Fault
Internal voltages are out of tolerance
Check power connections to the GPA
65 to verify that they are not
connected to ground or each other.
Ensure that power and ground
connections to the GPA 65 are
connected in their proper place.
Summary of Contents for Cessna Caravan G1000
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