Garmin GPS 55AVD - Manual (Page 74)

C-9
· Grip the battery pack around the outside edge (not the bottom).
· Push the top of the battery pack against the edge of a hard surface
which will not mar the plastic. The outer sleeve will slide off the cage,
revealing the batteries inside.
· Replace the batteries, observing the polarity diagram engraved in the
plastic.
· Slide the sleeve over the cage until it snaps into place, taking care that
you do not tear the gaskets which provide the battery pack seal.
C.6 MAINTENANCE
The GPS 55 is constructed of high quality material and should not require
user maintenance. Please refer any repairs to an authorized GARMIN
service center. (The unit contains no user serviceable parts, do not attempt
repairs yourself.)
Never allow gasoline or solvents to come into contact with your unit. Damage
to the case may occur which is not covered by your warranty.
The waypoints, routes, custom settings, and other data stored in the GPS 55
are maintained by an internal battery. (These data will not be lost even if you
remove the AA or rechargeable battery pack for separate storage.) The
internal memory battery should typically last three to five years. If the GPS
55 detects a low memory battery, you will be informed with the message
“MEM BATT”. You should return your unit to an authorized GARMIN service
center as soon as possible for service. Failure to do so may result in loss of
data each time you turn your unit off (indicated by the message “DATA
LOST”).
Your GPS 55 contains a highly accurate crystal oscillator which may drift
after many years of operation. If the unit detects excessive oscillator drift,
you will be informed with the message “ADJST OSC”. You should return your
unit to an authorized GARMIN service center as soon as possible. Failure
to do so may result in degraded acquisition performance.
C.7 CUSTOMER SUPPORT
Should you require additional assistance, please call our Customer Support
Department. Customers in the continental United States may use our toll free
number: 1-800-800-1020. Customers outside the continental United States
may call 1-913-599-1515.