To keep your printer operating at its best, clean it thoroughly several times a year by using the following instructions.
Never use alcohol or thinner to clean the printer. These chemicals can damage the printer.
Use a soft, dry, clean cloth to clean the surface of the document glass. If the glass surface is stained with grease or some other hard-to-remove material, use a small amount of glass cleaner and a soft cloth to remove it. Wipe off all remaining liquid.
Do not press the surface of the document glass with any force.
Be careful not to scratch or damage the surface of the document glass, and do not use a hard or abrasive brush to clean it. A damaged glass surface can decrease the scan quality.
Note:
Close the output tray after you use the printer to protect the printer from dust.