Instruction Manual

500W Series 190-01226-03 Rev. 2
Instructions for Continued Airworthiness Bell 206B Page 16 of 22
Alert Text Possible Cause Solution
Not receiving input data on
429 Channel #1 or #2
• No data has been received on
the ARINC 429 channel #1
connection for a period
exceeding five seconds.
• Refer to Table 6-1 “ARINC
429 device is not receiving
data from the GPS
500W/GNS530W”
Not receiving input data on
232 Channel #(1 through 5)
• No data has been received on
one (or more) of the RS-232
channel connections for a
period exceeding ten seconds.
• Refer to Table 6-1 “RS-
232 device is not
communicating with the
GPS 500W/GNS530W”
• Check for proper
configuration
• Check the wiring
Not receiving traffic data
• No traffic data is being
received.
• Contact Garmin technical
support.
OBS key stuck
• The OBS key is stuck in the
enabled (or pressed) state.
Try pressing the OBS key
again to cycle its operation.
• Contact Garmin technical
support.
• No destination waypoint has
been selected.
• Select a waypoint
OBS not available
• The GPS receiver cannot
currently determine its position.
• Refer to Table 6-1 “The
500W Series unit does not
compute a position.”
Obstacle database integrity
error
• The 500W Series unit has
detected a problem with a
database on the Terrain data
card.
• The data is not usable. Try
reloading the information
onto the card. If that does
not solve the problem
replace the card.
RAIM position warning
• 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.
• Wait for GPS satellite
geometry to improve.
Searching the sky
• The 500W Series unit is
searching the sky for GPS
satellites.
• Wait 20 minutes for unit to
complete cycle or until the
current position is located.
Stored data was lost
• All user waypoints, flight plans
and system settings have been
lost due to a memory battery
failure or system reset.
• If system was not reset
replace the battery.
TERRAIN configuration
conflict
• The current Terrain
configuration is not supported
by the hardware.
• Reconfigure the unit.
• Reconfigure TERRAIN
settings
TERRAIN configuration has
changed
• The unit’s terrain settings
have changed since it was
last turned on in normal
mode.
• Contact Garmin technical
support
Terrain database integrity
• The 500W Series unit has
detected a problem with a
• Reloading the information
onto the card.