JVC KD-DV7405 Instructions Manual page 61

• "No File" flashes on the display.
• "No USB" appears on the display.
• "Not Support" appears on the display and
track skips.
• "Read failed" appears on the display.
• Correct characters are not displayed (e.g.
album name).
• While playing a track, sound is sometimes
interrupted.
• The sound is interrupted or skipped during
playback of a USB device.
• Bluetooth device does not detect the unit.
• The unit does not detect the Bluetooth
device.
• The unit does not make pairing with the
Bluetooth device.
• Phone sound quality is poor.
60
Symptom Remedy/Cause
Connect a USB device that contains tracks encoded in an
appropriate format.
The track is unplayable.
The connected USB device may be malfunctioning,
or may not have been formatted correctly. The files
included in the USB device are corrupted.
For available characters, see page 48.
The tracks have not been properly copied into the USB
device. Copy tracks again into the USB device, and try
again.
• Turn off, then turn on the unit.
• Connect the device again, when the sound is not yet
restored.
The unit can be connected with one Bluetooth cellular
phone and one Bluetooth audio device at a time.
While connecting a device, this unit cannot be detected
from another device. Disconnect currently connected
device and search again.
• Check the Bluetooth setting of the device.
• Search from the Bluetooth device. After the device
detects the unit, select "Open..." on the unit to connect
the device. (See page 26.)
• Enter the same PIN code for both the unit and target
device.
• Select the device name from "Special," then try to
connect again. (See page 27.)
• Reduce the distance between the unit and the
Bluetooth cellular phone.
• Move the car to a place where you can get a better
signal reception.