Alert Text
No altitude input is
being received
No basemap data
available
Not receiving input data
on 429 Channel #1 or
#2
Not receiving input data
on 232 Channel #(1
through 5)
Not receiving traffic
data
NRST key stuck (GPS
500 only)
OBS key stuck
OBS not available
Obstacle database
integrity error
RAIM position warning
Searching the sky
Stored data was lost
500W Series
Instructions for Continued Airworthiness Bell 206B
Possible Cause
No altitude data is being received from
RS-232 (Serializer: Icarus, Rosetta or
Shadin) or grey code inputs.
The 500W Series unit has detected a
failure in the built-in basemap (land
data) memory. Land data does not
appear on the Map Page. Other unit
functions continue to work normally.
No data has been received on the
ARINC 429 channel #1 connection for
a period exceeding five seconds.
No data has been received on one (or
more) of the RS-232 channel
connections for a period exceeding
ten seconds.
No traffic data is being received.
The NRST key is stuck in the enabled
(or "pressed") state.
The OBS key is stuck in the enabled
(or pressed) state. Try pressing the
OBS key again to cycle its operation.
No destination waypoint has been
selected.
The GPS receiver cannot currently
determine its position.
The 500W Series unit has detected a
problem with a database on the
Terrain data card.
Although sufficient GPS satellite
coverage may exist, Receiver
Autonomous Integrity Monitoring
(RAIM) has determined the
information from one or more GPS
satellites may be in error.
The 500W Series unit is searching the
sky for GPS satellites.
All user waypoints, flight plans and
system settings have been lost due to
a memory battery failure or system
reset.
Solution
Refer to Table 2 "RS-232
device is not communicating
with the 500W/530W".
Contact Garmin technical
support to reload the basemap
data.
Refer to Table 2 "ARINC 429
device is not receiving data
from the 500W/530W"
Refer to Table 2 "RS-232
device is not communicating
with the 500W/530W"
Check for proper configuration
Check the wiring
Contact Garmin technical
support.
Try pressing the NRST key
again to cycle its operation. If
problem persists contact
Garmin technical support.
Contact Garmin technical
support.
Select a waypoint
Refer to Table 2 "The 500W
Series unit does not compute
a position."
The data is not usable. Try
reloading the information onto
the card. If that does not
solve the problem replace the
card.
Wait for GPS satellite
geometry to improve.
Wait 20 minutes for unit to
complete cycle or until the
current position is located.
If system was not reset
contact Garmin technical
support.
190-01226-03 Rev. 5
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