Do you have black lines in your scanned or copied documents? The typical problem is ink, correction fluid or trash blocking the image sensor. Look at the picture below, Read more

Does your brother printer or fax machine have bad printing such as very light print or spotty print? If you have these problems chances are you have a dirty corona wire. The corona wire is used by the printer to put a charge on the paper so the toner is attracted to it in the pattern that the laser draws out. Read more