There is noise or the sound skips.
Turn off the system, then reconnect the USB device.
The music data itself contains noise. Noise may have been introduced when creating music data due to the conditions of the computer. Create the music data again.
When using the USB storage media, copy the files to your computer, format the USB storage media in FAT16 or FAT32 format, and copy the files to the USB storage media again.*
The USB device cannot be connected into the 
(USB) port .
The USB device is being connected backwards. Connect the USB device in the correct orientation.
The USB storage media which has been used on another device does not work.
It may be recorded in an unsupported format. If so, first take the precaution of backing up important files on the USB storage media by copying them to your computer hard disk. Next, format the USB storage media with a FAT16 or FAT32 file system and transfer the
“Reading” is displayed for a long time.
It may take a while to finish reading the USB device if there are many folders or files on it. Thus, we recommend following these guidelines.
Total folders on USB device: 100 or less
Total files per folder: 100 or less
Erroneous display
Send the music data to the USB device again, as the data stored in the USB device may have been corrupted.
Play does not start.
Turn off the system, then reconnect the USB device.
Connect the USB device that this system can play.
Press (or USB on the unit) to start play.
Play does not start from the first track.
Set the play mode to Normal Play mode.