Instructions
Remove any discs from the open disc tray. Press firmly on the outer edges of your console's faceplate to ensure the faceplate is not loose as this could be holding your disc tray in place.
Press the "Eject" button on the console. If the tray closes when you press the button, try opening and closing the tray with a disc inside. Make sure the disc is not sticky and has no labels that could interfere with the closing of the tray.
Gently move the tray up and down, then from side to side. Afterward, try pressing the "Eject" button again. If the tray still won't close, you must contact Microsoft and order a repair.