Unwanted lines or streaks are printed out on your copies or scanned images! If these lines or streaks are missing from your print jobs and only appear on copies & scanned images then most likely the culprit is the “scan-thru” glass. The scan-thru glass is located either to the left or right of the original glass. It is much smaller than the original glass. To clean the scan-thru glass just use a paper towel dampened with glass cleaner or alcohol and remove any ink or other debris from the surface of the scan-thru glass. If cleaning the scan-thru glass did not resolve the problem your machine may require a service call.