COBY DP-350 - Manual (Page 30)

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I cannot transfer files to the player.
Ensure that your computer is running a supported
operating system.
If you are using a USB extension cable, ensure that
it is securely attached to the player and the PC, or
try using another USB cable.
If you have connected the player through a USB
hub, try connecting the player directly to your
computer.
Ensure that the player’s memory capacity is not full.
There is no sound during playback.
Check the volume level.
Ensure that the headphones are attached securely
to the player.
The sound quality of the music is poor.
Try playing the file on your computer. If the sound
quality is still poor, try downloading the file again or
re-encoding the file yourself.
Ensure that the bit rate of the file is not too low. The
higher the bit rate of the file, the better it will sound.
The minimum recommended bitrate is 128kbps for
MP3s and 96kbps for WMAs.
Try lowering the volume of the player.
Ensure that the headphones are attached securely
to the player.
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Troubleshooting