Question about Brother MFC-8840D All-In-One Laser Printer

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Dirty copies along the right and left edges of paper

Appears to be toner smudges along the edges of the paper. I've had this problem consistently for about two months of daily use.

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  • 4 more comments 
  • terryschloss Mar 03, 2009

    Thanks for your quick response. I had just changed both toner and drum before I wrote to you. I thought that might correct the problem but it didn't. The smudges remain exactly as before. (Is this the correct way to respond?)

  • terryschloss Mar 03, 2009

    I just checked the manual and so not find instructions for internal cleaning of toner spills. I've tried to wipe out the inside but that's not working.

  • terryschloss Mar 03, 2009

    Does that mean I take it in someplace for replacement of a part?

  • JDTec
    JDTec May 11, 2010

    Then is has to be the fuser that is bad.

  • JDTec
    JDTec May 11, 2010

    The fuser unit is the component that adheres the toner to the paper. If you installed new toner and drum, then you may have a fuser problem. Have you cleaned the unit internally of toner spills?

  • JDTec
    JDTec May 11, 2010

    start a print from tray 1/manual feed and just as the trailing edge of paper is entering the machine;quickly open it to stop print and take out the cartridge and look at it's drum and the paper underneath. if the issue is there at that point then it would point to the cartridge. if not then the fuser. Let me know the results.



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In this unit the fuser is called the Fixing unit. It would be difficult to replace if you are not familiar with repairing this unit.

You may have to have someone look at it and give you an estimate on the cost effectiveness of repairing or replacing the unit.
If you feel you can fix it here is the link for the service manual. In the middle you will see the word Multipart and acroos from it you will see the numbers 0,1,2,3.Click on each number to download it. These are 4 parts of the manual you have to download before extracting part 1.

If I could be of further assistance, let me know. If this helps or solves the issue, please rate it.
Thanks, Joe

Posted on Mar 04, 2009


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