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theyshotfritz
02-26-2008, 08:33 AM
I have a Lexmark 642 Laser printer that occasionally prints all black pages. I have already replaced the High Voltage Power Supply and the Engine Control Board. Any suggestions? Aside from just throwing it in the river.

Thanks.

MichaelTech
02-28-2008, 01:03 PM
Replace the charging rollers. Located inside and up. They come down when the door is closed.