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13
Additional information
Problem
Noticeable difference in DVD
and CD volume.
WMA/MP3/MPEG-4 AAC/JPEG discs
Problem
CD-ROM disc is not
recognized by the
system.
DVD-ROM disc is not
recognized.
Files don't show up in
the Disc Navigator/
Photo Browser.
Can't play WMA or
MPEG-4 AAC files.
Tuner
Problem
Considerable noise in
radio broadcasts.
Auto tuning does not
pick up some stations.
Sound is mono only.
USB connection
Problem
USB mass storage
device is not recognized
by the system.
Can't play WMA or
MPEG-4 AAC files.
54
En
Remedy
• DVDs and CDs use different recording methods. This is not a
malfunction.
Remedy
• Make sure that the CD-ROM was recorded using the ISO 9660 disc format. See
Disc compatibility table on page 48 for other disc compatibility information.
• Make sure that the DVD-ROM was recorded using the UDF bridge format. See
Disc compatibility table on page 48 for more on disc compatibility.
• The files on the disc must be named with the correct file extension: .mp3 for
MP3 files; .wma for WMA files; .m4a for MPEG-4 AAC files; .jpg for JPEG files
(upper or lower-case is OK). See Disc compatibility table on page 48.
• The files were recorded using DRM (digital rights management). This is not a
malfunction.
Remedy
• Connect the AM antenna (see Connecting the radio antennas on page 13) and
adjust the direction and position for best reception. You may also connect an
additional internal or external AM antenna (refer to Connecting external antennas on
page 13).
• Fully extend the FM wire antenna, position for best reception, and secure to a wall.
You may also connect an outdoor FM antenna (see Connecting external antennas on
page 13).
• Turn off other equipment that may be causing the noise or move it further away.
• The tuning interval is incorrect for your country or region. See Frequency step
setting on page 46 to switch the tuning interval.
• The radio signal is weak. Auto tuning will only detect radio stations with a good
signal. For more sensitive tuning, connect an outdoor antenna.
• Check that the tuner is not set to FM mono (see Improving FM stereo sound on
page 22).
Remedy
• Make sure you have completely inserted the USB connector to this unit.
• Check that the memory format is FAT16 or FAT32.
• USB devices with an internal USB hub are not supported.
• The files were recorded using DRM (digital rights management). This is not a
malfunction.
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