Garmin aera 500 Series Pilot’s Guide190-01117-02 Rev. A 23Overview Overview GPS Navigation Flight Planning Hazard Avoidance Additional Features Appendices Index1.6 SySteM SettiNGSThe third-level Setup Icons allow management of the following systemparameters:• Display• Sound• Units• Date & Time• Map• Position• Interface• Alarms• SUA Alarms• PowerRestoring system setting defaults:1) From the 'Home' Screen, touch Tools > Setup.2) Touch the desired Setup Icon (display, Sound, Units, date & Time,map, Position, Interface, Alarms, SUA Alarms, or Power).3) Touch menu > Restore default.Or:From the 'Home' Screen, touch Tools > Setup > menu > Restore AllSettings.diSPlaydisplay Setup