I have a 7700 tektronics printer that started printing badly on the first inch of the document....it has progressed to the whole page.... replaced the print cartridge, cleaned unit....replaced toner cart. .....only happens on black...other colors ok...when i pull out print head and inspect that area i see a roller that has toner covering it and looks like the same pattern...... not repetetive but spoty.....
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tektronics 7700 bad print on black only
- Thread starter jthumm
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