Denon Professional DN-500DC Guide D'utilisation page 13

Problem:
No Device appears
even when a USB
device or SD card is
inserted.
Files on a USB device
or SD card do not
appear.
Files on a USB device
or SD card cannot
play.
File names do not
appear properly.
Solution:
Disconnect and reconnect the USB device or
SD card 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 or SD card is
formatted using a FAT16 or FAT32 file
system.
Do not use a USB hub, USB extention cable,
or SD card reader.
The unit does not supply power to USB
devices. If your USB device requires a power
source, connect it to one.
Not all USB devices or SD cards 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 or SD card 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 or SD card 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 "."
Please see:
Other Information
> USB Devices /
SD Cards
Other Information
> USB Devices /
SD Cards
Other Information
> USB Devices /
SD Cards
Other Information
> USB Devices /
SD Cards
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