Unscrew bottom access cover.

Use a #2 Phillips Screwdriver and carefully remove Four (4) screws from bottom access panel.

It may be advisable to have a magnet handy, in the event the screws are difficult to extract due to the recessed mounting hole.

Open bottom access cover.

Use a Spudger or Suction Cup to pry open the access cover. Pay attention to provided image and be sure to tilt cover as shown to make removal easy.