Garmin GPS 165TSO Pilot's Manual

Contents

Appendix BMaintenance of the GPS 165The GPS 165 is built to exacting standards and does not require usermaintenance. Should the faceplate and lens require cleaning, use a soft cloth andnon-abrasive cleaner. The user data is maintained by an internal battery with a pro-jected life of 3 to 5 years. If the GPS 165 detects a low memory battery, you will beinformed with the message ‘Memory battery low’. You should return your unit to anauthorized GARMIN service center as soon as possible. Failure to do so may result inloss of data each time you turn your unit off. This will GREATLY increase satelliteacquisition time and no user data will be saved. This condition will be accompaniedby the message ‘Stored data lost’.The GPS 165 contains a crystal oscillator, which may drift after many years ofoperation. If the unit detects excessive oscillator drift, you will be informed with themessage ‘Osc needs adjustment’. When this occurs, contact an authorized GARMINservice center for service. Failure to do so may result in severely degradedacquisition performance.96APPENDIX BGPS 165 Installation/RemovalThe GPS 165 may be powered froman optional AC adapter when used awayfrom the aircraft, allowing you to use theGPS 165 at your home or office for flightplanning.