Do not press the glass surface of the scanner glass with any force.
Be careful not to scratch or damage the glass surface of the scanner glass, and do not use a hard or abrasive brush to clean it. A damaged glass surface can decrease the scan quality.
Never use alcohol, thinner, or corrosive solvent to clean the product. These chemicals can damage the product components and the case.
Be careful not to spill liquid into the product mechanism or electronic components. This could permanently damage the mechanism and circuitry.
Do not spray lubricants on the product.
Never open the product case.