Alarm Clock—The alarm clock has sounded.Anchor Drag Alarm—You have drifted out of the specified distance range.Approaching—You are less than one minute away from reaching a destination waypoint atyour present speed over ground.Arrival At—You have arrived at the destination waypoint.Can’t Change An Active Waypoint—You have attempted to change the “active to” or “activefrom” waypoint. Clear the active route or GOTO before making your changes.Card Format is Not Recognized—The cartridge inserted is not readable by the GPSMAP sys-tem and may be damaged. Reinsert the cartridge to make sure it is properly installed. If the car-tridge is still not recognized, call the G-chart information line at 1-800-427-6460.Cross-Track Alarm—You have exceeded the off-course distance specified in the CDI setup.Data Transfer is Complete—The receiver is finished uploading or downloading informationto the connected device.Database Memory has Failed—The built-in 64 nm database has failed. See an authorizedservice center for repair.Degraded Accuracy—The accuracy of your GPSMAP system has been degraded beyond 500meters due to poor satellite geometry or data quality. You should check other navigationalsources to verify the position indicated.Max Calibration Is 5000mt (16,400 ft)—You have exceeded the maximum possible mapcalibration.Memory Battery Power is Low—The internal battery that stores waypoints, routes, and trackplots needs to be replaced. Take your unit to an authorized GARMIN service center for installa-tion of a new battery.Need Altitude—Your GPSMAP system needs the altitude to maintain a position fix due to poorsatellite coverage. Enter your approximate altitude on the initialize position page.Need to Select Init Method—The GPSMAP 230 needs to be initialized to your present posi-tion. See pages 1-2 for complete instructions on initialization.No Differential GPS Position—Not enough data is being received to compute a DGPSposition.The GPSMAP 230 uses an on-screen messageprompt to alert you to important information.Whenever a message appears, press the J key toview the message.72SECTIONC APPENDIXMessages