C8070 No Magenta Image

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  • Gaffers01
    Trusted Tech

    Site Contributor
    250+ Posts
    • May 2011
    • 330

    C8070 No Magenta Image

    As the title says Im working on a Altalink C8070 on the latest firmware 103.003.023.22910
    where there is no magenta on anything copied or printed including test prints.

    I replaced Drum R3, magenta developer unit, magenta developer, Image transfer belt unit, developer HVPS.

    After replacing these and doing a test print magenta was still missing and when I pulled the M developer unit back out it was completely empty, and I mean empty.
    So I presume its just dumped it straight into the waste toner bottle.

    KCY images are all excellent.

    Any guidance to what could be the issue would be very helpful

    (all toners and parts are all genuine)
  • JeeDayHS
    Technician
    • Jan 2021
    • 18

    #2
    Re: C8070 No Magenta Image

    Try to switch Laser from Magenta to Cyan and check print

    Comment

    • richs
      Trusted Tech

      100+ Posts
      • Nov 2008
      • 237

      #3
      Re: C8070 No Magenta Image

      Originally posted by JeeDayHS
      Try to switch Laser from Magenta to Cyan and check print

      No lasers.LED print heads.

      Comment

      • JeeDayHS
        Technician
        • Jan 2021
        • 18

        #4
        Re: C8070 No Magenta Image

        I mean led print head my mistake

        Comment

        • Dech1
          Senior Engineer
          • Dec 2022
          • 37

          #5
          Re: C8070 No Magenta Image

          If you had dead LHP, it will throw out an error..

          Dumping dev- you have no bias or your blank exposure lamp is not working

          Check the bias connector where the dev tank pushes into
          check your bias PWB
          switch your lamp on through service mode to see if its working..

          Run your procon on/off and check the bias readings...

          Comment

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