Now, to completely remove the back panel and the left hand back service panel, you'll need to remove 5 Phillips #1 screws.

To remove the service panel, you need to remove a further 3, Phillips #1 screws. once you have done this, you can remove the back panel and the service panel.

Leave these three screw in as the service panel has larges holes for these three screws and undoing them, undoes the circuit boards stand offs.