See also:

Seek in PTY (Program type) group (type D audio)
In the PTY selection mode, when the preferred PTY group has been selected, turning the “TUNE/TRACK/CH” dial seeks within that PTY group. Turning the dial clockwise seeks up. Turning the dial ...

When “No song” is displayed (type D audio)
This message is displayed when no playable audio files are in the connected USB storage device/iPod®. Connect a USB storage device/iPod® that has playable audio files stored in it. ...

Forward direction
Type A and B audio Type C audio Turn the “TUNE/TRACK/CH” dial clockwise to skip to the beginning of the next track/file. Each time the dial is turned, the indicated track/file number will increase. ...