Gdl 59 Troubleshooting; Gsr 56 Troubleshooting; Gts 820/850 Troubleshooting - Garmin G1000 Nxi System Maintenance Manual

GDL 59 Troubleshooting

Symptom
No communication with GDL 59
No or low-quality Wi-Fi signal
Connects to Wi-Fi but cannot send
report data

GSR 56 Troubleshooting

Symptom
No communication with GSR 56
No or low-quality Iridium signal
No audio output
Unable to make a phone call

GTS 820/850 Troubleshooting

Problem
Unit does not power up – Data
failed message
Traffic Display erroneously
indicates TA at own ship position
G1000 NXi System Maintenance Manual
King Air 300 Series
190-00716-N1
Recommended Action
• Check power wiring and pin out of GDL 59 unit.
• Ensure GDL 59 configuration option has been loaded.
• Verify that a Wi-Fi network is configured and available.
• Ensure the Wi-Fi antenna is within range of a Wi-Fi network.
• Remove any obstacles between the aircraft Wi-Fi antenna and the Wi-Fi
network hub that may be blocking the signal.
• Check the Wi-Fi antenna cable and connectors.
• Verify antenna ground plane is adequate.
Activate Garmin Connext (reference Section 8.15). Note that a replacement
GDL 59 unit must be registered again, even if the MFD already shows
REGISTERED.
Recommended Action
• Check power wiring and pin out of GSR 56 unit.
• Ensure GSR 56 configuration option has been loaded.
• Ensure the Iridium antenna has an unobstructed view of satellite
constellation.
• Check the Iridium antenna cable and connectors.
• Verify antenna ground plane is adequate.
• Check wiring from GSR 56 to GDL 59 or from GSR 56 to GIA #1 (stand-
alone), as applicable to the installation.
• Verify subscription with Garmin Connext (reference Section 8.15).
• Verify signal quality is adequate
• Verify communication between GSR 56 and the display/control device
• Verify subscription with Garmin Connext (reference Section 8.15).
Cause
Improper wiring; circuit breaker open
Improper configuration
Suppression bus I/O fault
Solution
Ensure power is properly wired to the
GTS 820/850 and the TRFC circuit
breaker is closed.
Verify that the GTS 820/850 is
configured correctly for the desired
display.
Check the mutual suppression line to
ensure it is connected to the correct
pins at the GTS 820/850 as well as
the installed transponder. Ensure
there are no fractures in the wire, and
that the suppression line is
functioning properly.
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