Coby DP356 Instruction Manual page 39

Reset the player (use a paper clip to press the Reset

button on the rear of the player) and try again.
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.
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Troubleshooting
Page 39