JVC KW-HDR720 Instructions Manual page 20

No sound can be heard.
The song cannot be tagged.
Disc cannot be played back.
CD-R/CD-RW cannot be played back
and track cannot be skipped.
Disc sound is sometimes interrupted.
"NO DISC" appears on the display.
"PLEASE" and "EJECT" appear
alternately on the display.
"IN DISC" appears on the display.
Disc cannot be played back.
Noise is generated.
"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.
"READING" keeps flashing on the
display.
"NO FILE" appears on the display.
Noise is generated.
"NOT SUPPORT" appears and track
skips.
While playing a track, sound is
sometimes interrupted.
20 ENGLISH
Symptom
<ANALOG> is selected when receiving all digital broadcast of
HD Radio station. Select <DIGITAL / AUTO>. (page 8) / <DIGITAL>
is selected when receiving weak digital signals or receiving
conventional radio broadcast. Select <ANALOG / AUTO>. (page 8)
The HD Radio broadcast does not support iTunes Tagging function or
the broadcast does not contain PSD. You can tag the PSD only when
the TAG indicator lights up on the display.
Insert the disc correctly.
Insert a finalized CD-R/CD-RW (finalize with the component which
you used for recording).
Stop playback while driving on rough roads. / Change the disc. /
Check the cords and connections.
Insert a playable disc into the loading slot.
Press 0, then insert a disc correctly.
The disc cannot be ejected properly. Make sure nothing is blocking
the loading slot.
Use a disc with MP3/WMA tracks recorded in a format compliant
with ISO 9660 Level 1, Level 2, Romeo, or Joliet. / Add the extension
code <.mp3> or <.wma> to the file names.
Skip to another track or change the disc.
A longer readout time is required. 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.
A longer readout time is required. Do not use too many hierarchical
levels and folders. / Turn off the power then on again. / Reattach the
USB device again.
Check whether the device contains playable files.
Skip to another file.
Check whether the track is a playable file format.
The tracks have not been properly copied into the USB device. Copy
tracks again into the USB device, and try again.
Remedy/Cause