Chapter 1 - Basic info271. Press the button on the underside of the Mamiya DM digital back to remove the batteryslot cover.Removing the battery slot cover2.Press the battery into the recess on the bottom of the Mamiya DM System digital back,and then slide it across until it snaps into place.Inserting the batteryChapter 3 - Preparing the battery and compact flash cardinsertinGand removinGthe diGital back battery21