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Photos and specs  JVC  KD-G721

Warped disc Sticker Sticker residue Stick-on label Do not use the following discs: Troubleshooting What appears to be trouble is not always serious. Check the following points before calling a service center. 26Symptoms Remedies/Causes General• Sound cannot be heard from the speakers. • Adjust the volume to the optimum level. • Check the cords and connections. • The unit does not work at all. Reset the unit (see page 2). FM/AM • SSM automatic presetting does not work. Store stations manually. • Static noise while listening to the radio. Connect the aerial firmly. Disc playback • Disc cannot be played back. Insert the disc correctly. • CD-R/CD-RW cannot be played back. • Tracks on the CD-R/CD-RW cannot be skipped. • Insert a finalized CD-R/CD-RW. • Finalize the CD-R/CD-RW with the component which you used for recording. • Disc can be neither played back nor ejected. • Unlock the disc (see page 13). • Eject the disc forcibly (see page 2). • Disc sound is sometimes interrupted. • Stop playback while driving on rough roads. • Change the disc. • Check the cords and connections. MP3/WMA playback • Disc cannot be played back. • Use a disc with MP3/WMA tracks recorded in the format compliant with ISO 9660 Level 1, Level 2, Romeo, or Joliet. • Add the extension code <.mp3> or <.wma> to the file names. Symptoms Remedies/CausesSymptoms Remedies/Causes USB memory playback MP3/WMA playback • Noise is generated. Skip to another track or change the disc. (Do not add the extension code <.mp3> or <.wma> to non-MP3 or WMA tracks.) • A longer readout time is required Do not use too many hierarchies and folders. (“CHECK” keeps flashing on the display). • Tracks do not play back in the order Playback order is determined when the files are you have intended them to play. recorded. • Elapsed playing time is not correct. This sometimes occurs while playing. This is caused by how the tracks are recorded on the disc. • “NO FILES” appears on the display. Insert a disc that contains MP3/WMA tracks. • Correct characters are not displayed This unit can only display letters (upper case), (e.g. album name). numbers, and a limited number of symbols. • Noise is generated. 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.) • “CHECK” keeps flashing on the • Readout time varies depending on the USB display. memory. • Do not use too many hierarchy and folders. • Turn off the power then on again. • “NO FILES” flashes on the display. Attach a USB memory that contains tracks encoded in an appropriate format. • “NOT SUPP” appears on the display The track is unplayable. and track skips. ENGLISH • “READ” and “FAILED” appear alternately on the display, then returns to the previous source. • The attached USB memory may be malfunctioning, or may not have been formatted correctly. The files included in the USB memory are corrupted. • Do not pull out or attach the USB memory repeatedly while “CHECK” appears on the display. • Correct characters are not displayed (e.g. album name). This unit can only display letters (upper case), numbers, and a limited number of symbols. • While playing a track, sound is MP3/WMA tracks have not been properly copied sometimes interrupted. into the USB memory. Copy MP3/WMA tracks again into the USB memory, and try again. Continued on the next page ENGLISHSymptoms Remedies/Causes CD changer • “NO DISC” appears on the display. Insert a disc into the magazine. • “NO MAG” appears on the display. Insert the magazine. • “RESET 8” appears on the display. Connect this unit and the CD changer correctly and press the reset button of the CD changer. • “RESET 1” – “RESET 7” appears on the display. Press the reset button of the CD changer. • The CD changer does not work at all. Reset the unit (see page 2). iPod/D. player playback • The iPod or D. player does not turn on or does not work. • Check the connecting cable and its connection. • Update the firmware version. • Change the battery. • Buttons do not work as intended. The functions of the buttons have been changed. Press MODE before performing the operation. • The sound is distorted. Deactivate the equalizer either on the unit or the iPod/D. player. • “NO IPOD” or “NO DP” appears on the display. Check the connecting cable and its connection. • Playback stops. The headphones are disconnected during playback. Restart the playback operation using the control panel (see page 19). • No sound can be heard when connecting an iPod nano. Disconnect the headphones from the iPod nano. • No sound can be heard. • “ERROR 01” appears on the display when connecting a D. player. Disconnect the adapter from the D. player. Then, connect it again. • “NO FILES” or “NO TRACK” appears on the display. No tracks are stored. Import tracks to the iPod or D. player. • “RESET 1” – “RESET 7” appears on the display. Disconnect the adapter from both the unit and iPod/D. player. Then, connect it again. • “RESET 8” appears on ...

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