See also:

Scan
The scan mode lets you listen to the first 10 seconds of each track/file in succession. Press the “SCAN” button to start scanning upward beginning with the track/ file(s) following the currently ...

Warning and indicator lights
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When “CHECK DISC” is displayed
Press the eject button to unload the discs. Check that the disc is not damaged or scratched, and also check that the disc is inserted correctly. This message may appear when using some CD-RW discs. ...