See also:

Displaying the button assignment
Use a finger to touch the buttons. Do not wear gloves or use objects. The key assignment is displayed at the top edge of the screen. ▷ To display short information: touch the button. ...

Treble, bass, balance, andfader
► "Treble": treble adjustment. ► "Bass": depth adjustment. ► "Balance": left/right volume distribution. ► "Fader": front/rear volume ...

Lateral ventilation
Thumbwheel for opening and closing the vents continuously, arrow 1. Lever for changing the air flow direction, arrow 2. ...