User's Guide Improving Print and Scan Quality Cleaning the Scanner Glass When the copies or scanned images are smeared or scuffed, clean the scanner glass. c Important: Never use alcohol or thinner to clean the printer. These chemicals can damage the printer. 1. Open the document cover. 2. Use a soft, dry, clean cloth to clean the surface of the scanner glass. 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. 90