GNS 400W Series Installation Manual Page 5-33190-00356-08 Rev. G5.5 Ground Checks (Normal Mode)Turn the 400W Series unit off and bring the unit back up in normal mode for the following checks.5.5.1 Display of Self-Test DataFollowing normal power-up, the Data Base Pages are displayed followed by the Instrument Panel Self-Test Page. Pressing the ENT key once then displays the Instrument Panel Self-Test page(see Figure 5-10). During this time, the electrical outputs are activated and set to the values listed below.Press the ENT key to acknowledge the self test page. This is not a required check, although this page canbe useful in troubleshooting installation problems.NOTEElectronic displays which monitor the 400W Series unit‘s ARINC 429 output may varyin how and where annunciations are displayed.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) 400W Series unit displays the OBS value (149.5° if interfaced toan HSI with driven 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;commands increasing right bank at 1°/second for 5 seconds;commands 5° right bank for 5 seconds; commands decreasingright bank at 1°/second for 5 seconds, until command is 0° bankagain. This cycle repeats continuously.
