JVC KW-NT50HDT Manuel D'instructions page 90

Troubleshooting/error messages
Symptoms
Navigation voice cannot be heard from the
speakers.
The voice guidance does not come out from the
speaker on the driver's side.
Navigation guidance is sometimes incorrect.
A POI found using <POI Name> in the
<Destination Menu> is not within the
selected city.
The current position displayed on the map
remains wrong for more than 30 minutes.
The distance and estimated time in the
guidance are inaccurate after replacing/
rotating the tires.
"Check GPS Antenna"
"Acquiring GPS Signal"
"Route calculation failed."
"Route calculation is aborted because
destination is too far."
"Specified destination is not found."
"Speed pulse not detected. System works as
GPS only mode until speed pulse is detected."
Remedies/Causes
Guidance volume level is set to the minimum level. Adjust
it to the optimum level. (☞ page 40)
Change the <Output> setting. (☞ page 40)
Reversing signal/speed signal leads are not connected.
Connect them correctly (☞Installation/Connection
Manual).
This is not a malfunction. The System may also search
areas around the selected city/state.
Check the connection of the following leads.
– GPS antenna
– Speed signal lead
If any disconnection is found, connect the lead again.
• If no problems are found with connections, reset the
calibration data by selecting <Reset Calibration
Data>. (☞ page 39)
Perform <Reset Calibration Data> to clear the
accumulated calibration data. (☞ page 39)
Check the connection of the GPS antenna.
• Acquiring GPS signals. Wait until signal reception is
completed.
• GPS signals cannot be received. Move to the place where
the System receives the GPS signals.
Failed to calculate the route. The destination/via point is
too far from any road. Select another destination/via point
where is close to a road.
The destination/via point is too far from the current
position. Select another destination/via point where is
nearer to the current position.
Valid information is not found in the database. Search
for another place. Press [
different conditions (such as different category or place).
Check the connection of the speed signal lead.
90
] and search again with