Question about Xerox Phaser 7400DN Laser Printer
We have black lines running along the bottom edge of a letter sized paper (along the left edge of an 11x17 inch page). These are not smudge lines - there are about 80 mechanically perfect hairline rules, perfectly straight and spaced, running from the edge of that page (outside the print margin) to about 1" into the page. This occurs on ALL printed pages, such as the printer's own configuration page, or a document from my computer.
If the problem re-appears and updating the firmware (from office.xerox.com) does not help you are most likely looking at a replacement processor board.
Posted on Jul 28, 2008
1 of 3 things I can think of off top of my head.
Since they are straight, I would suspect the transfer unit.
If it were just one color it would be that imaging unit.
Unlikely the fuser.
It doesn't sound line an issue called bar coding ,where the machine prints random lines. That would be a software issue.
Take the transfer unit out and inspect it for the marks.
I am assuming the streaks are on all colors correct?
If it isn't on the transfer belt, and on all colors check the fuser and see if its latched.
Posted on Jan 16, 2008
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