Tom is 100% correct.
Additionally, to get to the CD slot to add/remove a CD, you press the eject button and the screen tilts (motorized) exposing the slot. If a CD is in the player, the CD ejects. If no CD is in the player, one of three things can happen: 1. Inserting a CD will cause the screen to return to its original position. 2. Doing nothing, the screen will go back to its original position after a timeout (10 secs?). 3. Pressing the eject button again will return the screen to its init position.
Also, if you obstruct the opening or closing of the screen it will close if the state is opening and open if the state is closing.