C458 rainbow effect scanning

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  • cube10025@gmail.com
    Technician

    50+ Posts
    • Aug 2022
    • 55
    #1

    C458 rainbow effect scanning

    I have a C458 machine, print fine but all the scans has a rainbow on them, or whatever you call it, see pic.

    I have cleaned the glass, run a non-image, gets several na1 but one ok but did not do anything.
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    Tags: c458, cleaned, non-image, rainbow, run
    • aberock
      Trusted Tech

      Site Contributor
      100+ Posts
      • May 2022
      • 104
      #2
      Re: C458 rainbow effect scanning

      Originally posted by cube10025@gmail.com
      I have a C458 machine, print fine but all the scans has a rainbow on them, or whatever you call it, see pic.

      I have cleaned the glass, run a non-image, gets several na1 but one ok but did not do anything.
      try replace ccd.

        Comment

        • Albonline
          Service Manager

          1,000+ Posts
          • Sep 2008
          • 1131
          #3
          Re: C458 rainbow effect scanning

          Originally posted by cube10025@gmail.com
          I have a C458 machine, print fine but all the scans has a rainbow on them, or whatever you call it, see pic.

          I have cleaned the glass, run a non-image, gets several na1 but one ok but did not do anything.
          a to d converter on ccd board, small chance it could be ram (scans are stored from the top of memory down). did you do anything to it recently ? the image looks digital but I can't tell for sure from the image posted.

            Comment

            • Gift
              Service Manager

              1,000+ Posts
              • Mar 2011
              • 2444
              #4
              Re: C458 rainbow effect scanning

              looks digital indeed, if re-seating the CCD cable won't help I'd probably swap the CCD, perhaps you can borrow one from a donator.

                Comment

                • blackcat4866
                  Master Of The Obvious

                  Site Contributor
                  10,000+ Posts
                  • Jul 2007
                  • 22927
                  #5
                  Re: C458 rainbow effect scanning

                  Originally posted by Gift
                  looks digital indeed, if re-seating the CCD cable won't help I'd probably swap the CCD, perhaps you can borrow one from a donator.
                  I agree with this one. Konica Minolta CCDs that do very long scan runs are well known for failing on the 654e series, and 808 series. Usually they store errors that auto-reset, but come back more & more frequently. Try re-seating the cable first, then the CCD.
                  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

                    • cube10025@gmail.com
                      Technician

                      50+ Posts
                      • Aug 2022
                      • 55
                      #6
                      Re: C458 rainbow effect scanning

                      Originally posted by Albonline
                      a to d converter on ccd board, small chance it could be ram (scans are stored from the top of memory down). did you do anything to it recently ? the image looks digital but I can't tell for sure from the image posted.

                        Comment

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