Garmin GTN 6 series Maintenance Manual - page 42
GTN 6XX/7XX Part 27 AML STC Maintenance Manual
190-01007-B1
Page 4-10
Rev. 1
4.3.1.3
VLOC/GS Related Alerts
Table 4-5. VLOC/GS Alert Troubleshooting Guide
Alert Text
Possible Cause
Corrective Action
VLOC RECEIVER -
Navigation receiver needs
service.
The GTN 650/750 has detected a failure in its
navigation receiver.
Contact Garmin Product Support.
VLOC RECEIVER -
Navigation receiver has
failed.
The GTN 650/750 has detected an internal
failure in its VLOC receiver.
Contact Garmin Product Support.
GLIDESLOPE - Glideslope
receiver needs service.
The GTN 650/750 has detected an internal
failure in its glideslope receiver.
Contact Garmin Product Support.
GLIDESLOPE - Glideslope
receiver has failed.
The GTN has detected an internal failure in its
glideslope receiver.
Contact Garmin Product Support.
REMOTE KEY STUCK - NAV
remote transfer key is stuck.
NAV remote transfer key is stuck in the
enabled or pressed state.
Press the NAV remote transfer switch to cycle its operation.
Go to the GTN DIAGNOSTICS - DISCRETE INPUTS page in configuration
mode and check that the state of the input changes when the NAV remote
transfer switch is pressed and released.
Verify that the NAV remote transfer switch wiring is correct.
If the problem persists, contact Garmin Product Support.