Open the scanner cover.
Using a damp, soft, lint-free cloth, wipe the following areas:
Close the scanner cover.
If your printer has another ADF glass inside door C, then continue with the following steps.
Open door C.
Close the door.
Regular printer maintenance extends the life of the printer and ensures quality prints. The process is simple and only takes a few minutes.
Check for obstructions that keep the scanner unit open.