JVC Serial No. Instruction Manual page 22

Symptoms
• A longer readout time is required
("READING" keeps flashing on the display).
• Tracks do not play back in the order you
have intended them to play.
• The elapsed playing time is not correct.
• "NO FILE" appears on the display.
• The correct characters are not displayed
(e.g. album name).
• Noise is generated.
• "READING" keeps flashing on the display.
• "NO FILE" appears on the display.
• Tracks/folders are not played back in the
order you have intended.
• "CANNOT PLAY" flashes on the display.
• "NO USB" appears on the display.
• The unit cannot detect the USB device.
• Correct characters are not displayed (e.g.
album name).
• While playing a track, sound is sometimes
interrupted.
• Microsoft and Windows Media are either registered trademarks or trademarks of Microsoft Corporation in the
United States and/or other countries.
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Remedies/Causes
Do not use too many hierarchical levels and folders.
The playback order is determined when the files are
recorded.
This sometimes occurs during playback. This is caused by
how the tracks are recorded on the disc.
Selected folder is an empty folder*. Select another folder
that contains MP3/WMA tracks.
* Folder that is physically empty or folder that contains
data but does not contain valid MP3/WMA track.
This unit can only display letters (upper case), numbers,
and a limited number of symbols.
The track played back is not an MP3/WMA track. Skip to
another file. (Do not add the extension code <.mp3> or
<.wma> to non-MP3 or WMA tracks.)
• Readout time varies depending on the USB device.
• Do not use too many hierarchy or folders.
• Turn off the power then on again.
• Reattach the USB device again.
Selected folder is an empty folder*. Select another folder
that contains MP3/WMA tracks.
* Folder that is physically empty or folder that contains
data but does not contain valid MP3/WMA track.
The playback order is determined by the write-in time
stamp. The first track/folder written into the USB device
will be the first track/folder for playback.
• Attach a USB device that contains tracks encoded in an
appropriate format.
• Reattach the USB device again.
This unit can only display letters (upper case), numbers,
and a limited number of symbols.
The MP3/WMA tracks have not been properly copied into
the USB device.
Copy MP3/WMA tracks again into the USB device, and
try again.