JVC KW-NT30 Manuel D'instructions page 88

Troubleshooting/error messages
Symptoms
Bluetooth device does not detect the unit.
The unit does not detect the Bluetooth device.
Echo or noise occurs.
Phone sound quality is poor.
The sound is interrupted or skipped while using
a Bluetooth audio player.
The connected audio player cannot be
controlled.
The unit does not response when you tried to
copy the phone book to the unit.
The rear view screen is not displayed when the
gear is shifted to the reverse (R) position.
The rear view screen is displayed when the gear
is not in the reverse (R) position.
"No Signal"
Remedies/Causes
This unit can be connected with one Bluetooth device at
a time.
While connected to a device, this unit cannot be detected
from another device. Disconnect currently connected
device and search again.
Check the Bluetooth setting of the device.
Adjust the microphone unit position.
• Reduce the distance between the unit and the
Bluetooth mobile phone.
• Move the car to place where you can get a better signal
reception.
• Reduce the distance between the unit and the
Bluetooth audio player.
• Disconnect the device connected for Bluetooth phone.
• Turn off, then turn on the unit.
• (When the sound is not yet restored) connect the player
again.
Check whether the connected audio player supports
AVRCP (Audio Video Remote Control Profile).
You may have tried to copy the same entries (as stored)
to the unit.
• Check <Camera Input> setting. (☞ page 81)
• Check the connection.
Check <Reverse Signal Polarity> setting. (☞ page 68)
Check the connection.
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