Dell 2355DN User Guide - Page 249
Cleaning Your Printer, Cleaning the Exterior - toner cartridge problems
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Cleaning Your Printer To maintain the print quality, follow the cleaning procedures below, each time the toner cartridge is replaced or if print quality problems occur. NOTE: Do not touch the transfer roller located under the toner cartridge when cleaning inside the printer. Oil from your fingers may cause print quality problems. CAUTION: Cleaning solvents that contain alcohol or other strong substances may discolor or crack the printer cabinet. Cleaning the Exterior Clean the printer cabinet with a soft, damp, lint-free cloth. Do not let water drip onto the printer or inside the printer. Cleaning the Interior Paper, toner, and dust particles can accumulate inside the printer and cause print quality problems, such as smearing or toner specks. Clean inside the printer to prevent these problems. 1 Power the printer off and unplug the power cord. Allow a reasonable amount of time for the printer to cool down. 2 Open the front cover and pull the toner cartridge straight out. Set it on a clean flat surface. CAUTION: To prevent damage, do not expose the toner cartridge to light for more than a few minutes. CAUTION: Do not touch the green underside of the toner cartridge. Use the handle on the cartridge to avoid touching this area. 248