Garmin GNC 355 Pilot's Manual page 259

ADVISORY
GPS searching sky.
Ensure GPS antenna
has unobstructed
view of the sky.
Low internal GPS
clock battery.
GPS receiver needs
service.
190-02488-01 Rev. B
CONDITION
WAAS board is acquiring
position and may take
longer than normal.
Typically occurs when
the unit is powered on
after installation or being
off for several weeks.
WAAS board indicates
that its clock battery is
low. May experience
delay when attempting
to acquire GPS position.
Almanac data may be
lost.
WAAS board is reporting
that it requires service.
GPS module may
continue to function.
Pilot's Guide
CORRECTIVE ACTION
No action necessary.
Contact dealer for service.
Use a different GPS receiver
or a non-GPS based source of
navigation. Contact dealer
for service.
Messages
6-7