To avoid a potentially deadly electrical shock, make sure that the device has been unplugged before opening the case. The large power supply capacitors can hold a lethal charge; it is a good idea to wait 10 minutes or more for any charge on the big capacitors to leak away before proceeding to open the case.

9 Phillips screws hold down the top case cover:

Two are on the top.

Two are on each side.

Three are along the top rear of the case.

Once these screws are removed, gently pull to spread the bottom edges of the top case.

Lift and slide rearward to remove the case top.