1-6
GTN 625/635/650 Pilot’s Guide
190-01004-03 Rev. P
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
1.4 Unit Power Up
The GTN 6XX System is integrated with the aircraft electrical system and
receives power directly from electrical buses. The GTN 6XX and supporting
sub-systems include both power-on and continuous built-in test features that
exercise the processor, memory, external inputs, and outputs to ensure safe
operation.
1.4.1 Start-Up Screens
During system initialization, test annunciations are displayed. All system
annunciations should disappear typically within the first 30 seconds after
power-up. Upon power-up, key annunciator lights also become momentarily
illuminated on the GTN 6XX display bezel.
The splash screen displays the following information:
• Copyright
• Database List and System version
• Instrument Panel Self-Test
Currently installed database information includes valid operating dates,
cycle number, and database type. When this information has been reviewed for
currency (to ensure that no databases have expired), the pilot is prompted to
continue. Databases that are not current will be shown in amber.
During the startup process the user may be asked if they would like to update
to newer databases. Additional information on database updates can be found
in section 18.2.
The COM and NAV radios, transponder controls, and GDL 88 control panel
are displayed on the Start-Up screens. Some functions may be unavailable until
after the databases are verified.
3 - Panel Self-Test1 - Copyright
2 - Software & Database
Versions & Dates
Figure 1-10 System Startup Pages
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