~~Make sure there is nothing on the scanner glass, that the scanner cover is properly installed on the scanner, and the scanner cover completely covers the scanner glass. Or, if the scanner cover underside is not white, or there are marks and scratches, you may cover the scanner glass completely with a white sheet of paper.
~~If you are using an Automatic Document Feeder, you may want to replace it with the original scanner cover. Otherwise, make sure it is properly connected and seated.
~~If you are using a Transparency Adapter, you may want to replace it with the original scanner cover. Otherwise, make sure it is properly connected, seated, and powered on.
