Pull the back panel up, then tilt it back. There will be two cables still holding it on.

Doing this will also release the connector cover on the left side. Set it aside for now, but remember to reinstall it later.

Disconnect the ribbon cable by flipping the black tab up, then pulling the cable out.

This procedure also applies to all of the other ribbon cables in the D5000.

Pull out the other connector by lifting it up with tweezers, or by prying it out. Fingernails also work well.