Bizhub C-20, calibration.

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  • Hansoon
    Field Supervisor

    Site Contributor
    2,500+ Posts
    • Sep 2007
    • 3347
    #1

    Bizhub C-20, calibration.

    Bizhub C-20, calibration.

    Machine prints fine but copies from the platen and ADF have a strong yellowish background.
    Optics are cleaned. All supplies are around 50% or higher though I cannot imagine that the supplies are having an influence in this case where printing is OK but only copying lousy. Machine has 60K on the clock.

    Can't find any adjustments in the book for the copy mode alone. Any ideas?

    Hans
    Last edited by Hansoon; 09-02-2012, 02:13 PM.
    “ Sent from my Intel 80286 using MS-DOS 2.0 “
    https://www.copytechnet.com/images/smilies/biggrin.png
    Tags: None
    • JustManuals
      Field Supervisor

      5,000+ Posts
      • Jan 2006
      • 9838
      #2
      Re: Bizhub C-20, calibration.

      This Parts & Service Manual can now be purchased for $12.77 and downloaded immediately after payment from


      Just Manuals, The Internet's largest selection of manuals ~ Instant Downloads


      Paul@justmanuals.com

        Comment

        • Hansoon
          Field Supervisor

          Site Contributor
          2,500+ Posts
          • Sep 2007
          • 3347
          #3
          Re: Bizhub C-20, calibration.

          "Can't find any adjustments in the book"

          Hans
          “ Sent from my Intel 80286 using MS-DOS 2.0 “
          https://www.copytechnet.com/images/smilies/biggrin.png

            Comment

            • blackcat4866
              Master Of The Obvious

              Site Contributor
              10,000+ Posts
              • Jul 2007
              • 22929
              #4
              Re: Bizhub C-20, calibration.

              I've only seen this one from a distance.
              So I've gleaned this much from the manual. Maybe you can make something of it:

              12.4.9 to enable enduser calibration: PS/PCL Print Mode (in the Copy display screen) > Select > Quality Menu > Calibration > Tone Calibration > ON
              11.2.15 enduser calibration: Utility > Machine Setting > Calibration > Select > ON > image stabilization is executed.
              12.4.9 manual color emphasis: PS/PCL Print Mode (in the Copy display screen) > Select > Quality Menu > Calibration > CMYK Density > Cyan (also Magenta, Yellow, Black) > select Highlight, Middle or Shadow > set value -3 to +3 > OK > repeat as necessary for each color.

              Pages 69 to 95 of the Printer_Copier_Scanner Users Guide describe the procedure nicely.
              Let me know if any of that works for you. =^..^=
              Last edited by blackcat4866; 09-02-2012, 07:24 PM.
              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 =^..^=

                Comment

                • montana
                  Trusted Tech
                  • Aug 2008
                  • 393
                  #5
                  Re: Bizhub C-20, calibration.

                  Originally posted by Hansoon
                  Bizhub C-20, calibration.

                  Machine prints fine but copies from the platen and ADF have a strong yellowish background.
                  Optics are cleaned. All supplies are around 50% or higher though I cannot imagine that the supplies are having an influence in this case where printing is OK but only copying lousy. Machine has 60K on the clock.

                  Can't find any adjustments in the book for the copy mode alone. Any ideas?

                  Hans
                  hi....yes mr hans i've seen this before....after i cleaned the optics the problem was corrected

                    Comment

                    • blackcat4866
                      Master Of The Obvious

                      Site Contributor
                      10,000+ Posts
                      • Jul 2007
                      • 22929
                      #6
                      Re: Bizhub C-20, calibration.

                      Originally posted by Hansoon
                      Bizhub C-20, calibration.

                      ... Optics are cleaned...
                      Hans
                      Originally posted by montana
                      ...after i cleaned the optics the problem was corrected...
                      I believe Mr Hans has cleaned the optics. Mr Hans is very smart tech. He would have thought of cleaning optics. =^..^=
                      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 =^..^=

                        Comment

                        • Mr Spock
                          Vulcan Inventor of Death

                          1,000+ Posts
                          • Aug 2006
                          • 2064
                          #7
                          Re: Bizhub C-20, calibration.

                          last time I saw this it ended up being weak lamp and/or lamp inverter. If the lamp has adjustable slides for light then try them otherwise see if you can find another lamp to test.
                          And Star Trek was just a tv show...yeah right!

                            Comment

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