User's Guide Maintaining the Printer 3. Open the document cover. 4. Clean the part that is shown in the illustration. Note: ❏ 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 glass surface too hard. ❏ Be careful not to scratch or damage the surface of the glass. A damaged glass surface can decrease the scan quality. Cleaning the Scanner Glass When the copies or scanned images are smeared or scuffed, clean the scanner glass. 101