This guide can also be used for the removal of the optical drive of a MacBook Pro 15” unibody mid 2013, under which the power button can be accessed, just ignor steps 6 & 7, steps 11 to 18, and steps 27 to29. It appears that this guide may also be used to remove the logic board as well, because the fixings shown in the picture at step 16 look similat to those of the 15” MacBook Pro, although you will also have to remove the additional fan.