190-01004-02 GTN 625/635/650 TSO Installation ManualRev. F Page 6-576.11 Ground Checks (Normal Mode)For the following checks, cycle power on the GTN and power it up in normal mode.6.11.1 Display of Self-Test DataFollowing normal power-up, the database page is displayed, followed by the Instrument Panel Self-Testpage. Touching ‘Continue’ displays the Instrument Panel Self-Test page. During this time, the electricaloutputs are activated and set to the values listed below. Touch ‘Continue’ to acknowledge the InstrumentPanel Self-Test page. This is not a required check, although this page can be useful for troubleshootinginstallation problems.Parameter Self-Test ValueCourse Deviation Half-scale left deviation, TO indication, flag pulledGlideslope/Vert. Deviation Half-scale up deviation, flag pulledAnnunciators All OnBearing to Waypoint (RMI) 135°Selected Course (OBS) The GTN displays the OBS value (149.5° if interfaced to an HSI withdriven course pointer).Desired Track 149.5° (Displayed as 150°)Items below are not displayed on the INSTRUMENT PANEL SELF-TEST pageDistance to Go 10.0 nautical milesTime to Go 4 minutesActive Waypoint “GARMN”Groundspeed 150 knotsPresent Position N 39°04.05’, W 94°53.86’Waypoint Alert ActivePhase of Flight En RouteMessage Alert ActiveLeg/OBS Mode Leg ModeGPS Integrity InvalidRoll Steering (if applicable)Flight Director commands 0° bank (level flight) for 5 seconds; commandsincreasing right bank at 1°/second for 5 seconds; commands 5° rightbank for 5 seconds; commands decreasing right bank at 1°/second for 5seconds, until command is 0° bank again. This cycle repeatscontinuously.
