Dell 3130cn Color Laser Printer User's Guide - Page 216

If the front cover remains open for more than five minutes, print quality may deteriorate. Dell print cartridges are available only through Dell. You can order more cartridges online at http://www.dell.com/supplies or by phone. To order by phone, see "Contacting Dell". It is recommended that you use Dell print cartridges for your printer. Dell does not provide warranty coverage for problems caused by using accessories, parts, or components not supplied by Dell. CAUTION: Never throw used print cartridges into fire. The residual toner could explode resulting in burns and injuries. CAUTION: Do not shake the used print cartridge to avoid spilling of toner. Removing the Used Print Cartridge 1. Open the side button and open the front cover. 2. Grasp the handles at both ends of the print cartridge that you want to replace and pull it out. CAUTION: Do not shake the print cartridge as it may spill some toner. Installing a New Print Cartridge 1. Ensure that the color of the new print cartridge matches that on the handle before replacing it. Shake the print cartridge five or six times to distribute the toner evenly. 2. Remove the print cartridge from its packaging.