Garmin GNS 530AW Pilot's Manual & Reference page 213

True north approach - Change Mag Var HDG to true
— The selected approach requires navigation information
be referenced to true north. In the AUX function, change
Heading Mode to "true."
User card format unknown — A data card has been
inserted, but the format of the card is not recognized.
User Magnetic Variation is active – Note that "User" is
selected on the AUX -- Units/Mag Var page and the mag-
netic variation value provided on that page is being used.
VLOC has failed — The GNS 530W has detected a failure
in its VLOC receiver. The VLOC receiver is not available
and the unit should be returned to your Garmin dealer for
service.
VLOC is not responding — (GNS 530W only) Internal
system-to-system communication between the main proces-
sor and the VLOC receiver has failed. Operational status
of the VLOC receiver is unknown and the unit should be
returned to your Garmin dealer for service.
VLOC needs service — (GNS 530W only) The unit has
detected a failure in its VLOC receiver. The VLOC receiver
may still be usable, but the unit should be returned (at your
earliest convenience) to your Garmin dealer for service.
VLOC remote transfer key is stuck — (GNS 530W
only) The remote VLOC transfer switch is stuck in the
enabled (or "pressed") state. Try pressing the switch again
to cycle its operation. If the message persists, contact your
Garmin dealer for assistance.
VLOC transfer key stuck — (GNS 530W only) The
VLOC flip-flop key is stuck in the enabled (or "pressed")
state. Try pressing the VLOC flip-flop key again to cycle
its operation. If the message persists, contact your Garmin
dealer for assistance.
Waypoint already exists — The name you have entered
for a user waypoint already exists in memory.
Waypoint(s) have been replaced — One or more user
waypoints were updated during a unit-to-unit crossfill
operation.
Waypoint memory is full — You have used all 1000 user
waypoint locations in the 500W-series unit memory. Delete
unwanted waypoints to make room for new entries.
190-00357-00 Rev G
12 - MESSAGES
ABBREVIATIONS &
NAV TERMS
203