Standby Altimeter Troubleshooting; Gdl 59 Troubleshooting - Garmin G1000 System Maintenance Manual

5.24

Standby Altimeter Troubleshooting

Symptom
Altimeter lighting is inoperative or
malfunctioning
Altimeter Vibrator is inoperative or
malfunctioning or fail flag is
displayed
Altitude displayed is incorrect
5.25

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
Page 5-86
Revision 1
Recommended Action
•
Perform the Standby Instrument Electrical Power Checks in Section 8.1.5.
•
Remove standby altimeter per Section 6.27 and inspect the electrical
connector.
•
Check that electrical power is being appropriately supplied to the
instrument.
•
If the input electrical power is not adequate, troubleshoot the wiring
harness.
•
If the input electrical power is appropriate, replace the standby
altimeter or contact the manufacturer for further troubleshooting.
•
Using a pitot-static ramp tester, check altitude displayed on standby
altimeter (Note that PFD2 has error correction above 19,000 ft. and will
not be the same as the non-corrected standby altimeter.)
Inspect the pitot/static ports and associated equipment for faults.
Replace the standby altimeter or contact the manufacturer for further
troubleshooting. See Section 6.27 for removal instructions.
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 Flight Data Services (reference Section 7.27). Note that a
replacement GDL 59 unit must be registered again, even if the MFD
already shows REGISTERED.
G1000 / GFC 700 System Maintenance Manual - 300/B300 Series King Air
190-00716-01