51G500H Cockpit Reference Guide190-01150-03 Rev BALERTS ALERTSAlertsNOTE: Contact your Garmin dealer for service if any of the followingalerts appear.On Screen AlertsAlert DescriptionAHRS1 GPSAHRS 1 not receiving any GPS information.AHRS 1 is operating exclusively in no-GPS mode.AHRS 1 is using the backup GPS information.AHRS1 SRVC AHRS1 magnetic fi eld model needs update. This appears onthe ground only.AHRS1 TAS AHRS is not receiving true airspeed from ADC.CAL LOST Registry reports that the GDU 620 has lost calibration data.CNFG MISMATCH GDU 1-2 airframe confi guration settings disagree.CNFG MODULE Failure of confi guration module.DATA LOST Pilot stored data was lost. Recheck data and settings.DIAG MODE System is in Diagnostic Mode.FAN 1/2 FAIL Cooling fan #1 or #2 has failed.GATE MODE Automated testing is on.GEO LIMITS AHRS too far North/South, no magnetic compass.GPS1/2 FAIL No GPS1 or GPS2 data is available.GPS(1/2) PPS FAIL The PPS signal has not been received in more than 5seconds.GSR FAIL GSR power discrete is on and GSR status discrete is off.The Iridium interface reports a timeout.HDG FAULT AHRS 1 magnetometer fault has occurred.HDG LOST HDG features disabled or defaulted to GPS1 TRK. CONFIG Error in confi guration of specifi c LRU, where denotes specifi c LRU. COOLING Specifi c LRU has poor cooling, reducing power usage. DB ERR Database for specifi c LRU is corrupt. SERVICE Specifi c LRU needs service.