Question about Brother MFC-8640D All-In-One Laser Printer
My copies print fine, and the margin on one side has repeating smudges darker on edge and lighter towards inside
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Posted on Jan 02, 2017
Can only be two things the drum or the fuser. More than likely drum they last about 4 toners i think.
Learn the art of getting a page to stop halfway threw printing, you want to stop the page after the drum has put a image on the paper but before paper has gone threw the fuser (hotbit).
Once you have mastered the position correctly by stopping the printing by opening the door and removing drum/toner cartridge, to reveal the paper that is printed but can be rubbed off, we will know if marks are coming from the drum (you will see them) or from the fuser, if print is fine.
Posted on Jan 11, 2008
SOURCE: black line down right margin
Have you tried a new toner and drum unit? if not please do so. If that doesn't work then it is a scanner lamp failure and will need replacing.
You can fix it but trying to obtain this part for such an old machine will be hard. Don't know the part number sorry.
Posted on Feb 04, 2008
do this procedure
1.print test page then stop the printer on the middle print proses by turn the printer of or open the rear cover
2.remove the paper jam carefully
3.look to the paper if the problem found change the drum unit els the fusser unit cause the problem
Posted on Apr 01, 2008
SOURCE: Lines along edge of paper
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
Its probably a defective toner. If the film on the toner drum is scratched it can cause toner to stick to the drum everytime it spins causing the constant marks.
Posted on Jul 30, 2008
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