II Morrow Inc. 50 User Manual page 300

Troubleshooting
Problem
Search for nearest
waypoints reveals
too few or wrong
types of waypoints
Position fix seems
inaccurate
Bearing & distance
values appear to be
wrong
Wrong bearing and
track values
Display blinks
No altitude info
No altitude info
13-4
Possible Cause
Incorrect selection
of waypoint types to
show after search
Runway Limits are
set for a value that
is too large
Wrong seed
position
A mistake may have
been made in
entering the Lat/Lon
position for a User
waypoint, or the
wrong waypoint was
selected
Incorrect magnetic
variation entered
Voltage applied to
system is too low
Altitude information
device was not
configured during
installation
No power to the
altitude encoder
Action
Check "Airspace
Setup" function and
verify that the
desired waypoint
type to search is
"ON", see page 10
Check the "Identifier
and Waypoint
Type" section of the
Moving Map
function on page 6
Check the Runway
Limits for too large
a value, see page
12
Re-enter seed
position
Verify that the
position of the User
waypoint is accurate
Check the FROM
and TO waypoints
Check Magnetic
Var option - select
"Automatic" or
enter correct value,
see page 7
Check avionics
power bus
Check installation
configuration
Check altitude
encoder power