Canon pc 940 exposure adjust

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  • scottmt
    Junior Member
    • Oct 2010
    • 6
    #1

    [CQ] Canon pc 940 exposure adjust

    Cleaned optics and copies are still a little dirty. Is there a pot on a circuit board to sdjust exposure?
    Thanks.
    Tags: adjust, canon, circuit, cleaned, copies, dirty, exposure, image, printing, toner, unit
    • teckat
      Field Supervisor

      Site Contributor
      10,000+ Posts
      • Jan 2010
      • 16083
      #2
      Originally posted by scottmt
      Cleaned optics and copies are still a little dirty. Is there a pot on a circuit board to sdjust exposure?
      Thanks.
      do u mean spots ?- background ?
      does the problem move on paper when printing ?
      post a pic



      It has 6 mirrors that send the image to the drum unit. Also, do the marks move up and down the page? Also, have you replaced the drum cartridge recently? Pull the drum unit out and inspect the drum it self. Check the fixing ass'y. Try to use a dry rag and wipe up any loose toner in the paper path then try to run some blank pages in the copier this may clear up the problem...
      **Knowledge is time consuming, exhausting and costly for a trained Tech.**

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        • zaza
          MECANOGRAPHE

          1,000+ Posts
          • Mar 2008
          • 1095
          #3
          hi l don't think you have this problems at exposure ...try check your drum or your blad cleaner ..
          BEST TECHNICIAN . NICE PEOPLE .

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