[. . . ] Remove tape slack before inserting a cassette, particularly when using C-90 or prerecorded cassettes. [. . . ] Note: Be sure to unfold this page and refer to the front diagrams as you read each chapter. Hold the DCP in the orientation as shown in the , figure below, and put it into the supplied DCP case (Ensure the DCP is in the correct orientation. Insert the DCP into the right side of the main unit and press the left side to lock it. After removing it, place it in a protective case and be careful not to drop it or subject it to strong shocks. [. . . ] Be careful not to damage it by pressing on it with fingernails, pens, screwdrivers, etc. [. . . ]