Slide the keyboard up so the function-key-edge slips a small distance (3mm) beneath the keyboard bezel, freeing the arrow-key-edge.

Using a flathead screwdriver or spudger, lift the arrow-key-edge of the keyboard until it clears the bezel above the palm rest.

Slide the keyboard away from the screen, with the arrow-key-edge still above the palm bezel, until you have exposed a gap near the function-key-edge.

Lift the function-key edge and rotate the keyboard to expose its back. Adhesive on the ribbon cables may tug but will easily loosen with a gentle pull.