See also:

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. ...

Channel scan
Type A and B audio Type C audio Press the “SCAN” button to change the radio to the SCAN mode. In this mode, under the selected category, the radio scans through the channel until a station is found. ...

Replacing the air cleaner element
Replace the air cleaner element according to the maintenance schedule in the “Warranty and Maintenance Booklet”. Under extremely dusty conditions, replace it more frequently. It is recommended ...