The side of the EMI shield with the slot for the DVD lens ribbon cable has two small metal clips that fasten to black plastic tabs on the DVD drive housing.

Use the tip of a spudger to bend the two metal clips up enough so that they are no longer fastened to their respective plastic tabs.

The EMI shield is made of a soft, malleable metal. It can be easily be bent out and back into shape, but excessive fatigue may cause the clips to break.

Make sure both clips are pushed back down into their original positions at reassembly.