Lexmark CX417de User Manual page 205

Maintaining the printer
Cleaning the scanner glass
Clean the scanner glass if you encounter print quality problems, such as streaks on copied or scanned images.
1
Slightly dampen a soft, lint-free cloth or paper towel with water.
2
Open the scanner cover.
3
Clean all the areas shown, and then let them dry.
1 White underside of the ADF cover
2 White underside of the scanner cover
3 Scanner glass
4 ADF glass
4
Close the scanner cover.
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