Garmin G900X Pilot’s Guide 190-00726-00 Rev. J10SYSTEM OVERVIEWSYSTEMOVERVIEWFLIGHTINSTRUMENTSEISAUDIO PANEL& CNSFLIGHTMANAGEMENTHAZARDAVOIDANCEAFCSADDITIONALFEATURESAPPENDICESINDEX1.3 SYSTEM POWER-UPNOTE: Refer to Appendix A for system-specific annunciations and alerts.The G900X System is integrated with the aircraft electrical system and receives power directly from electricalbusses. The PFD(s), MFD, and supporting sub-systems include both power-on and continuous built-in testfeatures that exercise the processor, RAM, ROM, external inputs, and outputs to provide safe operation.During system initialization, test annunciations are displayed, as shown in Figure 1-4. All system annunciationsshould disappear typically within the first minute of power-up. Upon power-up, key annunciator lights alsobecome momentarily illuminated on the Audio Panel, the Control Unit, and the display bezels.On the PFD(s), the AHRS begins to initialize and displays “AHRS ALIGN: Keep Wings Level”. The AHRSshould display valid attitude and heading fields typically within the first minute of power-up. The AHRS can alignitself both while taxiing and during level flight.When the MFD powers up, the Power-up screen (Figure 1-5) displays the following information:• System version• Copyright• Land database name and version• Safe Taxi database information• Terrain database name and version• Airport Terrain database name and version• Obstacle database name and version• Navigation database name, version, and effectivedates• Airport Directory name, version and effective dates• FliteCharts/ChartView database informationCurrent database information includes valid operating dates, cycle number, and database type. When thisinformation has been reviewed for currency (to ensure that no databases have expired), the pilot is prompted tocontinue.Pressing the ENT Key (or right-most softkey) acknowledges this information, and the Navigation Map Page isdisplayed upon pressing the key a second time. When the system has acquired a sufficient number of satellites todetermine a position, the aircraft’s current position is shown on the Navigation Map Page.Figure 1-4 PFD Initialization Figure 1-5 Example MFD Power-up Screen
