Never use alcohol, thinner, or any corrosive solvent to clean the scanner. Doing so could cause deformation or discoloration to occur.
Never spray any liquid or lubricant on the scanner. Damage to equipment or circuits may cause abnormal operations.
Never open the scanner case.
Open the input tray, and pull the lever to open the scanner cover.
Wipe the glass surface inside the scanner cover. Wipe with a dedicated cleaning cloth or a soft, lint-free cloth. If the glass surface is very dirty, wipe with a soft, lint-free cloth dampened with a small amount of dedicated cleaner or water.
Do not place too much force on the glass surface.
Do not use a brush or a hard tool. Any scratches on the glass may affect the scan quality.
Do not spray cleaner directly onto the glass surface.
Close the scanner cover with both hands. Next, close the input tray.
If the Glass Dirt Detection error message appears frequently, you can change the detection level.
Select Settings > Scanner Settings > Glass Dirt Detection on the scanner's control panel.