Light copy's when copying off glass (Prints from PC fine)

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  • Doug James
    Senior Tech

    Site Contributor
    500+ Posts
    • Jan 2012
    • 935

    #1

    [CQ] Light copy's when copying off glass (Prints from PC fine)

    The copy's off the glass are noticeably slighter lighter than the prints. If you adjust the density to dark they look fine. Is there a way to adjust the exposure density in service mode to just affect the copies off the glass and not the prints ? Thanks so much for any help !!
  • guitar9199
    Service Manager

    Site Contributor
    1,000+ Posts
    • Sep 2016
    • 1099

    #2
    Re: Light copy's when copying off glass (Prints from PC fine)

    Usual culprit for light copies is dirty optics...I'd start with cleaning the lenses and mirrors and see if that doesn't help.

    ....other than that, I'm not as familiar with Brother products, so see if there's something here that may give you some direction.

    Online User's Guide

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    • blackcat4866
      Master Of The Obvious

      Site Contributor
      10,000+ Posts
      • Jul 2007
      • 22997

      #3
      Re: Light copy's when copying off glass (Prints from PC fine)

      It may be pertinent to know what model you're working on. =^..^=
      If you'd like a serious answer to your request:
      1) demonstrate that you've read the manual
      2) demonstrate that you made some attempt to fix it.
      3) if you're going to ask about jams include the jam code.
      4) if you're going to ask about an error code include the error code.
      5) You are the person onsite. Only you can make observations.

      blackcat: Master Of The Obvious =^..^=

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      • Doug James
        Senior Tech

        Site Contributor
        500+ Posts
        • Jan 2012
        • 935

        #4
        Re: Light copy's when copying off glass (Prints from PC fine)

        Originally posted by blackcat4866
        It may be pertinent to know what model you're working on. =^..^=
        Thanks for your Feedback. I forgot to put the model number when I posted it... ugh (I hate it when I do that) Going to repost....

        Comment

        • apollo
          Technician

          100+ Posts
          • Mar 2008
          • 182

          #5
          Re: Light copy's when copying off glass (Prints from PC fine)

          Originally posted by Doug James
          Thanks for your Feedback. I forgot to put the model number when I posted it... ugh (I hate it when I do that) Going to repost....

          You can Always edit the post in advance edit settings LOL

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          • tonerjockey
            Senior Tech

            500+ Posts
            • Apr 2014
            • 562

            #6
            Re: Light copy's when copying off glass (Prints from PC fine)

            remove the copy glass. then clean the lamps and inner mirrors and the CCD lens.

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            • Phil B.
              Field Supervisor

              10,000+ Posts
              • Jul 2016
              • 22798

              #7
              Re: Light copy's when copying off glass (Prints from PC fine)

              Originally posted by tonerjockey
              remove the copy glass. then clean the lamps and inner mirrors and the CCD lens.
              it's not easy top remove glass... you have to remove ADF and complete scanner. It doesn't have mirrors on most Brothers

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              • tsbservice
                Field tech

                Site Contributor
                5,000+ Posts
                • May 2007
                • 7963

                #8
                Re: Light copy's when copying off glass (Prints from PC fine)

                It is dirty optics combined with old(weared) drum.
                Digital machines are good to compensate image for dust in optics, but when drum count gets high numbers on Brother I believe that's the result. Replace drum unit with new or used but with few prints and you will see the difference.
                A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.
                Blessed are they who can laugh at themselves, for they shall never cease to be amused.

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