I have a sharp machine that puts magenta and black lines across the page in different spots, the line can be thin at times and ticker at times. It has the hacksaw charge coronas that i clean and it will go away for maybe 250-500 pages before the lines return. I have look in the service manaul at some of the codes to run on the machine at can't see anyting for the charge grids.I have clean the machine ,change the black and magenta drums,blades and new charge grid and the problem returns to soon.page count for black is
200,456 and color 91,873
200,456 and color 91,873
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