Garmin GTN 650 Pilot's Guide - Page 315

Message Description Action GPS RECEIVER Low internal clock battery. The GPS module indicates that its clock battery is low. The unit will function normally, but may take a longer than normal period to acquire a GPS position. Contact dealer for service. GPS RECEIVER GPS receiver needs service. The GPS module is reporting that it needs service. The GPS module may continue to function. Use a different GPS receiver or a non-GPS based source of navigation. Contact dealer for service. GPS SEARCHING SKY Ensure GPS antenna has an unobstructed view of the sky. The GPS module is acquiring position and may take longer than normal. This message normally occurs after initial installation or if the unit has not been powered for several weeks. No action is necessary; message is informational only. GTN GTN needs service. The GTN has lost calibration data that was set by Garmin during manufacturing. Contact dealer for service. INTERNAL SD Internal SD card has an Contact dealer for service. CARD ERROR - error. This card is not GTN needs service. accessible by the user. INTERNAL SD Internal SD card was CARD REMOVED - removed. This card is GTN needs service. not accessible by the user. Contact dealer for service. Foreword Getting Started Xpdr Ctrl Com/Nav FPL Direct-To Proc Wpt Info Map Traffic Terrain Weather Nearest Music Utilities System Messages Symbols Appendix Index 190-01004-03 Rev. B Garmin GTN 625/635/650 Pilot's Guide 16-9