Garmin GTN 6 series Maintenance Manual - page 55
190-01007-B1
GTN 6XX/7XX Part 27 AML STC Maintenance Manual
Rev. 1
Page 5-7
5.1.1
Display of Self-Test Data
Following normal power-up, the database pages are displayed, followed by the Instrument Panel Self Test
page. Touch Continue to display the Instrument Panel Self-Test page. During this time, the electrical
outputs are activated and set to the values listed below. Touch Continue to acknowledge the Instrument
Panel Self-Test page. This is not a required check, although this page can be useful for troubleshooting
installation problems.
[1] Not displayed on the Instrument Panel Self Test page
[2] Not displayed on the GDU 620.
[3] Not displayed on the GDU 620 for GDU software versions prior to 6.10.
Table 5-1. Self Test Values
Parameter
Self-Test Value
Course Deviation
Half-scale left deviation, TO indication, flag pulled
Glideslope/Vert. Deviation
Half-scale up deviation, flag pulled
Annunciators
All On
Selected Course (OBS)
The GTN displays the OBS value (149.5° if interfaced to an HSI with
driven course pointer).
Desired Track
149.5° (Displayed as 150°)
Distance to Go [1]
10.0 nautical miles
Time to Go [1]
4 minutes
Bearing to Waypoint (RMI) [1]
135°
Active Waypoint [1]
“GARMN”
Groundspeed [1]
150 knots
Present Position [1]
N 39°04.05’, W 94°53.86’
Waypoint Alert [1]
Active
Phase of Flight [1] [2]
En Route
Message Alert [1] [3]
Active
Leg/OBS Mode [1]
Leg Mode
GPS Integrity [1]
Invalid
Roll Steering (if applicable) [1]
Flight Director commands 0° bank (level flight) for 5 seconds;
commands increasing right bank at 1°/second for 5 seconds;
commands 5° right bank for 5 seconds; commands decreasing right
bank at 1°/second for 5 seconds, until command is 0° bank again.
This cycle repeats continuously.