Care Information; Cleaning The Unit; Battery Replacement; Display Backlight - Garmin CNX 80 Pilot's Manual

Appendix

Care Information

Cleaning the Unit

The GNS 480 is constructed of high quality materials and does not require user maintenance other than clean-
ing. The front bezel, keypad, and display can be cleaned with a soft cotton cloth dampened with clean water.
DO NOT use any chemical cleaning agents. Care should be taken to avoid scratching the surface of the display.
To resolve problems that cannot be remedied using this guide, contact Garmin Product Support in the U.S.A.
at 866/739.5687 or Garmin Europe at 44/ 0 87 0850 1243.

Battery Replacement

The GNS 480 includes an internal battery that will last about 10 years. The battery is used for internal RAM
memory and GPS system information. Regular planned replacement is not necessary. The GNS 480 will
display a "low battery" message when replacement is required. Once the low battery message is displayed, the
battery should be replaced within 1 to 2 months. If the battery is not replaced and becomes totally discharged,
the GNS 480 will remain fully operational, but the GPS signal acquisition time will be increased. This acquisi-
tion time can be reduced by entering a new seed position each time the unit is powered on. There is no loss
of function or accuracy of the GNS 480 with a dead battery. The battery is not user replaceable. To replace the
battery, contact the Garmin repair station or factory authorized repair station.

Display Backlight

The display backlight is rated by the manufacturer as having a usable life of 20,000 hours. This life may be
more or less than the rated time depending on the operating conditions of the GNS 480. Over time, the back-
light will dim and the display will not perform as well in direct sunlight conditions. The user must determine
by observation when the display brightness is not suitable for its intended use. Contact Garmin AT repair
station or factory authorized repair station when the backlight requires service.
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