Question about Xerox Phaser 8400 Laser Printer

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Xerox 8400 light printing

We have a Xerox Phaser 8400 that is printing black on 1/2 of the page and a faded black to dark green on the other. If it is built the same as the 8200 series there are two halogen lights that heat the drum in the preheater unit. My opinion is without tearing this thing apart is that one light has gone out. Does this sound right or could there be another problem to consider.

DPC

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No, If one lamp goes out they both will not function. They do not have anything to do with print quality.
You may have a bad maintenance kit. but more than likely you have a bad print head.
Run the cleaning , eliminate stripes and eliminate smears modes. But more than likely the print head is bad. I would say a bad print head is about a 95 percent chance of causing your problem.
The halogen lamps only heat the drum, and if one was bad the machine would fault out with a 15,004 code.

Posted on Oct 12, 2008

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