Denon Professional DN-300UI Guide D'utilisation page 12

Troubleshooting
If you encounter a problem, try doing these things first:
• Make sure all cables and other connected devices are properly and securely connected.
• Make sure you are using DN-300UI as described in this User Guide.
• Make sure your other devices or media are working properly.
• If you believe DN-300UI is not working properly, check the following table for your problem and
solution.
Problem:
Power does not turn on.
DN-300UI does not produce any
sound, or the sound is distorted.
Using the radio produces noise.
No Device appears even when a
USB device is inserted.
Files on a USB device do not
appear.
Files on a USB device cannot
play.
File names do not appear
properly.
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Solution:
Make sure DN-300UI's power input is properly connected to a
power outlet using the included power cable.
Make sure all cable and device connections are secure and
correct.
Make sure none of the cables are damaged.
Make sure the settings on your device, loudspeaker, mixer, etc.
are correct.
Make sure the antenna is properly connected.
Change the position or orientation of the antenna.
Use an outdoor FM antenna.
Move the antenna away from other cables.
Disconnect and reconnect the USB device to make sure it is
securely inserted.
Make sure the USB device is of a mass storage class or
compatible with MTP.
Make sure the USB device is formatted using a FAT16 or
FAT32 file system.
Do not use a USB hub, USB extension cable.
Not all USB devices are guaranteed to work; some may not be
recognized.
Make sure the files are of a supported file format. Files that are
not supported by this unit will not appear.
Make sure the USB device uses a folder structure that the unit
supports: up to 999 folders (up to 8 folder levels, including the
root) and up to 999 files.
If your USB device is partitioned, make sure the files are in the
first partition. The unit will not show other partitions.
Make sure the files are of a supported file format. Files that are
not supported by this unit will not appear.
Make sure the files are not copyright-protected. The unit cannot
play copyright-protected files.
Make sure the files are using only supported characters.
Characters that are not supported will be replaced with a "."