cyan problem TASKalfa 2353ci

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  • dikyo
    Technician
    • Apr 2011
    • 45
    #1

    cyan problem TASKalfa 2353ci

    Hi Guys,

    I have a problem with cyan on this machine.
    (see attach.)

    I already replaced:
    all developer and drum units
    Main high voltage pwb
    Parts pwb Drum Dlp connect
    Feed Image pwb
    Engine pwb


    Problem is not solved yet.

    Any suggestion is welcome

    Thanks in advance

    Grtz

    Dikyo
    Attached Files
    Tags: cyan, drum, engine, pwb
    • blackcat4866
      Master Of The Obvious

      Site Contributor
      10,000+ Posts
      • Jul 2007
      • 22973
      #2
      Re: cyan problem TASKalfa 2353ci

      Do you see this pattern on the developing roller? Are you using genuine toner? =^..^=
      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

        • avio2
          Trusted Tech

          100+ Posts
          • Jul 2010
          • 150
          #3
          Re: cyan problem TASKalfa 2353ci

          Originally posted by dikyo
          Hi Guys,

          I have a problem with cyan on this machine.
          (see attach.)

          I already replaced:
          all developer and drum units
          Main high voltage pwb
          Parts pwb Drum Dlp connect
          Feed Image pwb
          Engine pwb


          Problem is not solved yet.

          Any suggestion is welcome

          Thanks in advance

          Grtz

          Dikyo
          dv unit is news?
          before change dv and dk have turno off and disconect ac cable?

            Comment

            • sparkycivic
              Trusted Tech

              250+ Posts
              • Apr 2017
              • 348
              #4
              Re: cyan problem TASKalfa 2353ci

              I'm going to throw out a guess of: LSU. Only because I cannot imagine how a mechanical issue can do this since so many parts have already been replaced.

              This unit uses a LSU with four lasers, and a common polygon motor, so perhaps the cyan laser is somehow malfunctioning? Also there is no feedback inside the LSU for verifying color laser operation, only black so cmy laser malfunction will not result in any failure code except for calibration fail C76XX.

              I also notice that the area which SHOULD be cyan, is not, but instead continues the background pattern.

                Comment

                • toddanderson
                  Trusted Tech

                  100+ Posts
                  • Dec 2005
                  • 234
                  #5
                  Re: cyan problem TASKalfa 2353ci

                  Run a copy with the cyan main charge roller removed and post the sample.


                  Originally posted by sparkycivic
                  I'm going to throw out a guess of: LSU. Only because I cannot imagine how a mechanical issue can do this since so many parts have already been replaced.

                  This unit uses a LSU with four lasers, and a common polygon motor, so perhaps the cyan laser is somehow malfunctioning? Also there is no feedback inside the LSU for verifying color laser operation, only black so cmy laser malfunction will not result in any failure code except for calibration fail C76XX.

                  I also notice that the area which SHOULD be cyan, is not, but instead continues the background pattern.

                    Comment

                    • dikyo
                      Technician
                      • Apr 2011
                      • 45
                      #6
                      Re: cyan problem TASKalfa 2353ci

                      Hi ,

                      Thanks for so far.

                      This pattern is also visible on the drum.


                      Off course we use original toner.

                      When i am back at the customer I'll post some examples.

                      grtz

                      Dikyo

                        Comment

                        • pascalb.
                          Technician
                          • Aug 2016
                          • 47
                          #7
                          Re: cyan problem TASKalfa 2353ci

                          Hello,
                          Personally I think a cyan bias problem.
                          have you checked the high voltage?
                          Do not lament,
                          do not mock,
                          do not hate,
                          but understand.

                            Comment

                            • dikyo
                              Technician
                              • Apr 2011
                              • 45
                              #8
                              Re: cyan problem TASKalfa 2353ci

                              Hi Guys,

                              After replacing the Main highvoltage pwb for the second time the problem was solved.

                              grtz

                              Dikyo

                                Comment

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