Copy Has Vertical Black Streaks

    12-Sep-2011
    8200949100

    Issue

    Copy has vertical black streaks.
    Copy has vertical black streaks.

    Cause and Solution

    Appropriate paper is not being used.
    Replace the paper with which can be used with this printer.

    The feeder roller, and the scanning area are dirty. (MF4580dn/MF4570dn/MF4550d/MF4450 only)
    Clean the feeder roller, and the scanning area.

    The fixing unit is dirty.
    Clean the fixing unit.

    The toner cartridge is not installed properly.
    Install the toner cartridge properly.