bizhub C220 - yellow shadows on edge - only in color mode -

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  • Laserbeam
    Trusted Tech

    100+ Posts
    • Aug 2011
    • 152
    #1

    [CQ] bizhub C220 - yellow shadows on edge - only in color mode -

    Hello at all,

    a bizhub C220 shows the following quality problem: Only in color-mode the copies/printouts have a light yellow shadow at the edge (in sub-scan direction). Multiple copies show a weakening effect. After a short pause, the phenomenon will reappear. The first copy shows the strongest yellow shadow, the 3rd the weakest and from the 4th is nothing more to be seen.
    First I replaced the yellow drum, unfortunatelly no improvement, after that the transfer-belt and transfer-roller, again no improvement.

    What could still cause this error? Developing-unit yellow???

    Unfortunately the yellow area is not visible on the scanned image. I marked this with a ballpoint pen.
    Attached Files
    Tags: None
    • habik
      Service Manager

      Site Contributor
      1,000+ Posts
      • Apr 2010
      • 2014
      #2
      Re: bizhub C220 - yellow shadows on edge - only in color mode -

      That could be y-dev. But before you go down that route. Have you cleaned the cavity where transfer belt sits? Re-seating of HV board and devs may improve.
      Have you tried - Initialize Background+Image Stabilise and then Stabilise+Gradation adjust?


      Just out of curiosity are those pink lines there to enhance the yellow spots area?

      Try taking picture with your phone. Sometimes its better than a scan. You can take detailed shot.
      .OK Google! ... will I need Berrocca this morning?
      Firmwares HERE

        Comment

        • blackcat4866
          Master Of The Obvious

          Site Contributor
          10,000+ Posts
          • Jul 2007
          • 22662
          #3
          Re: bizhub C220 - yellow shadows on edge - only in color mode -

          Originally posted by habik
          That could be y-dev. But before you go down that route. Have you cleaned the cavity where transfer belt sits? Re-seating of HV board and devs may improve.
          Have you tried - Initialize Background+Image Stabilise and then Stabilise+Gradation adjust?


          Just out of curiosity are those pink lines there to enhance the yellow spots area?

          Try taking picture with your phone. Sometimes its better than a scan. You can take detailed shot.

          Like he said. =^..^=
          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

            • Laserbeam
              Trusted Tech

              100+ Posts
              • Aug 2011
              • 152
              #4
              Re: bizhub C220 - yellow shadows on edge - only in color mode -

              Thank you for these helpful replies!
              I will run these hints and report again and try to capture the next time with my Iphone these yellow shadow.

              I wish you a successful working day!

                Comment

                • copier tech
                  Field Supervisor

                  5,000+ Posts
                  • Jan 2014
                  • 7879
                  #5
                  Re: bizhub C220 - yellow shadows on edge - only in color mode -

                  You are not a tech are you?

                  Any tech before ordering a yellow drum would have swapped it with another colour to confirm the yellow image unit was causing the issue.

                  Just saying.........
                  Let us eat, drink, and be merry, because tomorrow we may die!

                  For all your firmware & service manual needs please visit us at:

                  www.copierfirmware.co.uk - www.printerfirmware.co.uk
                  ​

                    Comment

                    • Laserbeam
                      Trusted Tech

                      100+ Posts
                      • Aug 2011
                      • 152
                      #6
                      Re: bizhub C220 - yellow shadows on edge - only in color mode -

                      Today I was again at the customer. At first I carried out "Initialize Background+Image Stabilise and then Stabilise+Gradation adjust", unfortunately without success, the yellow shadows were still there.
                      Then I renewed the yellow developing-unit (DV311Y) and the yellow shadows were dissapeared!!!!!!!!!

                      Accidentally I opened the front flap for the toner bottles .......
                      and I didn`t believe what my eyes saw ...... there was only one original (magenta) toner bottle (black plastic cap), the other 3 (grey plastic cap), yellow, cyan and black are certainly not original Konicaminolta, but from a third party (see the attached photo).
                      Can it be, that toner, which is not original Konicaminolta, caused this phenomenon?
                      The prints with the yellow shadows I made today with my Iphone. These are now better to recognize than scanned. They are located at the top.
                      Attached Files

                        Comment

                        • allan
                          RTFM!!

                          5,000+ Posts
                          • Apr 2010
                          • 5445
                          #7
                          Re: bizhub C220 - yellow shadows on edge - only in color mode -

                          Jip i had endless problems with that same brand of yellow toner. The places that yellow toner got into...
                          I convinced the the guys to switch back to original toner. What a great machines that is with the right stuff in it.
                          Now the dev units the drums the transfer belts and the fusers always goes way past the recommended yield.

                          Cant remeber when last i had a TCR error on these machines.
                          Whatever

                            Comment

                            • blackcat4866
                              Master Of The Obvious

                              Site Contributor
                              10,000+ Posts
                              • Jul 2007
                              • 22662
                              #8
                              Re: bizhub C220 - yellow shadows on edge - only in color mode -

                              Before too much additional time passes I would attempt to convince the customer to pull the aftermarket toners. I would throw in that there will be no parts or labor warranty with use of aftermarket supplies. They may not be very responsive now, but when the next developing unit overtones and they have to pay again, the story will be different. =^..^=
                              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

                                • Laserbeam
                                  Trusted Tech

                                  100+ Posts
                                  • Aug 2011
                                  • 152
                                  #9
                                  Re: bizhub C220 - yellow shadows on edge - only in color mode -

                                  Thank you for your quick replies. I fully agree with what you mean.

                                  The customer immediately ordered the original toner.

                                    Comment

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