Remove the ODD from your system, next flip it and remove the 4 screw on its back side, now observe the front side of the ODD, there is a lever mechanism, which you will have to move to open the tray.
After that, de-attach the holding clips on the side of the ODD. Now you can fully remove the whole ODD with the PCB and the motors, just remove the optical media from the ODD and re-fit the whole thing.
Now you are good to go