DMP 300 (260-2818) Ribbon FaxBack Doc. # 4632 Black Ribbon (260-2819) If the ribbon is already installed, simply check to see that it is properly threaded between the paper and the print head. If the ribbon cassette is not installed, or if you need to replace it due to excessive wear or faint printing, follow this procedure: 1. Set the power switch to OFF. NOTE: When you turn off the power, any information stored in the printer's buffer is automatically lost. 2. Open the access cover. 3. Position the print head between the bail rollers. Make sure the bail is closed. IMPORTANT: The print head can get very hot during extended periods of printing. Be sure to let print head cool off before you touch it. 4. To replace the ribbon cassette, grasp the old cassette at the arrow marks and gently pull it upward. 5. Unwrap the new cassette. Before inserting the new cassette, tighten the ribbon by turning the ribbon feed knob in the direction of the arrow. 6. Hold the ribbon cassette with the ribbon feed knob facing up and the flat end toward the front of the printer. 7. Place the flat end into the ribbon plate, then lower the front of the cartridge over the print head until it snaps into place. 8. Turn the ribbon feed knob in the direction of the arrow to take up the slack in the ribbon. 9. Replace the access cover. CAUTION: Printing without paper or ribbon can damage the print head or platen. (smm 07/27/93)