69G500 Cockpit Reference Guide190-01102-03 Rev GALERTS ALERTSAlertsNOTE: Contact your Garmin dealer for service if any of the followingalerts appear.On Screen AlertsAlert DescriptionADC1 ALT EC ADC Altitude Error Correction is unavailable.GDC is reporting that altitude correction is unavailable.AHRS1 GPSAHRS 1 or AHRS 2 is not receiving any GPS information.AHRS 1 or AHRS 2 is operating exclusively in no-GPS mode.AHRS 1 or AHRS 2 is using the backup GPS information.AHRS1/2 SRVC AHRS1 or AHRS 2 magnetic field model needs update. Thisappears on the ground only.AHRS1/2 TAS AHRS1 or AHRS 2 is not receiving true airspeed from ADC.ALT KEY INOP The ALT key is disabled.AUD NOT AVAIL Audio system is not available.AUD SYS FAIL Audio system has failed.CAL LOST Registry reports that the GDU 620 has lost calibration data.CNFG MISMATCH GDU 1-2 airframe configuration settings disagree.CNFG MODULE Failure of configuration 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.ETM CAPTURE ADAS+ engine trend monitor is recording trend data.ETM EXCEED ADAS+ engine trend monitor is reporting an exceedence oradvisory condition.ETM FAULT ADAS+ engine trend monitor is reporting a system fault.