c654 simplex ADF scan rainbow

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  • Synaux
    Service Manager

    Site Contributor
    1,000+ Posts
    • Mar 2012
    • 1224
    #1

    c654 simplex ADF scan rainbow

    I am at a total loss here. The attached is single side scan of an 8.5x5.5 inch page set to 11x17 from ADF (so the purdy colors are basically not scanning any paper--this was first detected due to punched originals). 2nd Untitled-2.jpg
    Tags: fine, option, re-cleaned, scan, side
    • BillyCarpenter
      Field Supervisor

      Site Contributor
      VIP Subscriber
      10,000+ Posts
      • Aug 2020
      • 14770
      #2
      Re: c654 simplex ADF scan rainbow

      I'm a little confused. You're trying to scan a text document and all those colors are showing up?

      PS - Single pass ADF or no?

      Edit: If that's the case, I had a similar problem on a Kyocera box and it was a bad scan board. It scanned fine from the platen and on one side of a 2 sided copy when using ADF.

      Edit 2: The way it was explained to me (by blackcat) is the scanner control board contains a color table with a numeric value for every color in the spectrum and it gets damaged.


      Mine looked like this:

      example of scan quality issue.pdf
      Last edited by BillyCarpenter; 12-17-2020, 04:00 AM.
      Adversity temporarily visits a strong man but stays with the weak for a lifetime.

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        • Reed
          Senior Tech

          Site Contributor
          100+ Posts
          • Feb 2011
          • 241
          #3
          Re: c654 simplex ADF scan rainbow

          you may have to adjust mirror 3. I have seen this issue a couple times. I think it is the hex screw on the front side.. you should only have to turn it a little bit ( like 3/4 of a turn ccw) to see if makes any change. I had the bulletin but I can't seem to find it . maybe someone else actually has the bulletin and can find it .. good luck

            Comment

            • splblazer91
              Trusted Tech

              100+ Posts
              • Jul 2014
              • 204
              #4
              Re: c654 simplex ADF scan rainbow

              3rd mirror adjustment has always fixed it for me.

                Comment

                • blackcat4866
                  Master Of The Obvious

                  Site Contributor
                  10,000+ Posts
                  • Jul 2007
                  • 22705
                  #5
                  Re: c654 simplex ADF scan rainbow

                  Originally posted by Reed
                  you may have to adjust mirror 3. I have seen this issue a couple times. I think it is the hex screw on the front side.. you should only have to turn it a little bit ( like 3/4 of a turn ccw) to see if makes any change. I had the bulletin but I can't seem to find it . maybe someone else actually has the bulletin and can find it .. good luck
                  I was guessing a focus issue also. Or maybe the DF white plate is stained or not at the correct height.

                  As much as I like being quoted, I don't think that's the case being the colors are so irregularly distributed.
                  =^..^=
                  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

                    • Synaux
                      Service Manager

                      Site Contributor
                      1,000+ Posts
                      • Mar 2012
                      • 1224
                      #6
                      Re: c654 simplex ADF scan rainbow

                      Thanks for all the input and apologies for the overdue response....

                      Somehow the adjuster on the right rear hinge got into a terrible jam and caused the ADF to be so crooked it was causing this issue.

                      I never would have guessed that could cause this. Just gaining experience, I suppose

                      Note: this issue was me tricking the machine to copy areas with no paper (white strip in attachment is 5.5" piece of paper, but the scan area was 8.5"x11"). It is likely if you get this issue it will only show on the extreme edges of scans or from pre-punched/"holey" originals. If anyone can explain this I am all ears; otherwise ignorance is bliss.

                        Comment

                        • blackcat4866
                          Master Of The Obvious

                          Site Contributor
                          10,000+ Posts
                          • Jul 2007
                          • 22705
                          #7
                          Re: c654 simplex ADF scan rainbow

                          Some, I can explain. The statement sized area is correctly focused at the top surface of the glass. And if the matt was touching the glass, that would also be correctly focused.

                          Why those particular colors? That I don't know. Perhaps there's a reflective light source shining some light in around the edge of the DF matt. I'm going to assume that your DF matt is not that same pattern of colors as the image. You see that ripple just past halfway? Perhaps that's the shadow of the enduser pressing the start button? =^..^=
                          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

                            • Synaux
                              Service Manager

                              Site Contributor
                              1,000+ Posts
                              • Mar 2012
                              • 1224
                              #8
                              Re: c654 simplex ADF scan rainbow

                              Originally posted by blackcat4866
                              Some, I can explain. The statement sized area is correctly focused at the top surface of the glass. And if the matt was touching the glass, that would also be correctly focused.

                              Why those particular colors? That I don't know. Perhaps there's a reflective light source shining some light in around the edge of the DF matt. I'm going to assume that your DF matt is not that same pattern of colors as the image. You see that ripple just past halfway? Perhaps that's the shadow of the enduser pressing the start button? =^..^=
                              So I guess the matt/adf was out of threshold, but it was able to still focus on the paper itself. I guess I kinda sorta makes sense. It would be interesting to do this again with a transparency just to see if it changes the pattern, but I have little interest in de-calibrating the adf just to try it. I might use a mirror just see what happens because I like doing pointless things.

                              That ripple is still there, but is nearly unnoticeable in standard operation. I've noticed that the optics seem weaker in operation as far as results go compared to legacy machines (slight skews and ripples--that only I notice). But don't deal with new machines either.

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