See also:

Deactivating HDC
Press the button again; the LED goes out. HDC is automatically deactivated above approx. 37 mph/60 km/h. ...

Office
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Starting playback
Push the CD/DVD into the drive with the labeled side facing upward. The CD/DVD is automatically pulled in. ▷ Playback begins automatically after a few seconds. ▷ Otherwise: select ...