Lexmark CX833
Open the scanner cover.
Remove the glass cleaner tool.
Open door A1.
Using the tool, wipe the ADF glass.
Close door A1.
Using a damp, soft, lint-free cloth, wipe the following areas:
Return the tool into place.
Close the scanner cover.
Clean the printhead lens whenever you replace a cartridge or remove the imaging kit.
Learn the proper way of cleaning your printer and the precautions needed to keep it safe.