TASKalfa 250ci - Pitch Black Copies

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  • DarrylTech
    Junior Member
    • Sep 2016
    • 5

    #1

    TASKalfa 250ci - Pitch Black Copies

    Good day, the Taskalfa 250ci I am working on makes complete black copies when copying through the doc feeder or from the glass.

    Internal Prints are 100% correct.

    I have replaced the CCD, ISM board and ISC board.

    Firmware wont take, no matter what version I use it says no change for everything.

    any help would be appreciated.
  • Red

    #2
    Re: TASKalfa 250ci - Pitch Black Copies

    Originally posted by DarrylTech
    Good day, the Taskalfa 250ci I am working on makes complete black copies when copying through the doc feeder or from the glass.

    Internal Prints are 100% correct.

    I have replaced the CCD, ISM board and ISC board.

    Firmware wont take, no matter what version I use it says no change for everything.

    any help would be appreciated.
    RTFMx2

    Comment

    • subaro
      Service Manager

      1,000+ Posts
      • Oct 2010
      • 1274

      #3
      Re: TASKalfa 250ci - Pitch Black Copies

      Poor contact in the exposure
      lamp connector terminals.
      Reinsert the connector. Also check for continuity within the
      connector cable. If none, remedy or replace the cable.
      Defective inverter PWB. Check if the exposure lamp lights when the terminal on the
      inverter PWB goes low while maintenance item U061 is
      run. If not, replace the inverter PWB.
      Defective ISM PWB. Run maintenance item U061 and check if YC5-4 on the ISM
      PWB goes low. If not, replace the ISM PWB
      THE ONLY THING FOR EVIL TO TRIUMPH IS FOR GOOD MEN TO DO NOTHING..........edmund burke

      Comment

      • DarrylTech
        Junior Member
        • Sep 2016
        • 5

        #4
        Re: TASKalfa 250ci - Pitch Black Copies

        Thanks for the reply, but I have already followed the procedures in the manual. Looking for a solution that is not in the manual.

        Comment

        • mommok
          Technician
          • Jul 2014
          • 48

          #5
          Re: TASKalfa 250ci - Pitch Black Copies

          remove scanner glass and look and the carrier or for the scanner mirrors. in some cases there are little plastic sliders that ride along the rail. if these are broken then friction is built up causing issues with proper scanning of images. in parts manual look at scanner section 1 (fig 14) part labeled 35 (part number 2DC12230). these work like the sliders you use to move a large piece of furniture.

          Comment

          • Tonerkiller
            Senior Tech

            500+ Posts
            • Oct 2012
            • 668

            #6
            Re: TASKalfa 250ci - Pitch Black Copies

            Does the lamp light? if it does, then is there a mirror out of place?

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