Honda TRX500FA 2006 Owner's Manual page 82

Compass Direction Indicator
If the receiver loses a position fix (because of a large obstacle nearby or
overhead), the compass direction indicator will disappear as shown in
the illustration and the antenna mark ( ) will flash. 2
(2)
(2) antenna mark
If the receiver reacquires a position fix, the compass direction indicator
will appear as shown in the illustration.
GPScape System
73