Dell 3110cn Color Laser Printer User Guide - Page 296

3. Replace the tray into the printer. Replacing the Belt Unit CAUTION: Before performing any of the following procedures, read and follow the safety instructions in your Owner's Manual. NOTICE: Make sure nothing touches or scratches the surface (black-colored film) of the belt unit. Scratches, dirt, or oil from your hands on the film of the belt unit may reduce print quality. NOTICE: To protect the drums of the print cartridges against bright light, close the front cover within 5 minutes. If the front cover remains open for more than 5 minutes, print quality may deteriorate. Dell belt units are available only through Dell. To order by phone, see your Owner's Manual. Dell recommends Dell belt units for your printer. Dell does not provide warranty coverage for problems caused by using accessories, parts, or components not supplied by Dell. Removing the Used Belt Unit NOTE: Remove any print jobs from the center output tray, and close the multipurpose feeder cover before opening the front cover. 1. Make sure that the printer is turned off. 2. Push the side button and open the front cover.