MF4880 dw black lines and streaks

[Andrewd67]

Our small company has 5 Canon MF4880 dw's. All five of them have performed flawlessly until recently - they are workhorses. Only 2 out of our 5 of these printers will produce a good clean copy or print. Three of them are producing black streaks - one of them exhibits small rectangular black bars along the right edge (long edge), and the other two exhibit black lines going down the long edge. We have tried new imaging units/cartridges in all three but this has not helped. There is supposed to be a "quality adjustment" and a "cleaning the fixing unit" that we can do, but none of our printers will do it - it says "load letter or A4 paper" but the tray is already full. 

[Darius]

Hi, Andrewd67.

When performing those maintenance steps, a sheet of plain paper will need to be loaded in the Manual Feed Tray.  The manual feed tray may be found above the top cassette.  Push the paper guides all the way out, and slide the plain paper in (one sheet at a time).

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