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JV33-130 not printing one channel

Discussion in 'General Chit-Chat' started by IVRI, Apr 28, 2019.

  1. IVRI

    IVRI New Member

    6
    1
    3
    Dec 6, 2018
    Concord
    Hello everyone,

    We purchased a new JV33-130 printer three years ago and had been using without it any issues, a year ago the head was replaced due to substantial damaged caused by one of the metal substrate holders. Recently, after doing a test draw, I noticed one of the channels was not firing at all while all 7 other channels were printing at 100%. I would then run a 'hard clean' maintenance routine and that channel showed as firing above 80%; in one occasion I repeated the test draw several times and the channel gradually stopped firing. This lead to believe that what it seemed a firing was actually backwash from the 'hard clean'.
    I swapped dampers and the channel still not fires. Any suggestions as to what may be the issue? I called Mimaki's tech support, they suggested doing the damper swap, which I had already done, then they mentioned it might be some type of electrical issue. Has anyone experienced similar issues?
    Any help on this will be highly valued.
     
  2. Neil

    Neil Member

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    11
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    Aug 25, 2005
    Adelaide, South Australia
    Have a look in the Mimaki sub-forum. It's full of these questions and answers.
    I always suggest it's the cap top - not getting an air tight seal, not able to draw ink through the head.
    It most always is.

    Quite often I get a channel drop out 100%.
    I take the head over to the left side, clean around the head so it's 100% clean, clean the cap top & wiper.
    Then a normal cleaning will usually bring it back and keep it running again.

    Keep an eye on your cap top and wiper when it's doing a cleaning. Make sure you're getting ink coming through.
    You may need a new cap top.
     
  3. IVRI

    IVRI New Member

    6
    1
    3
    Dec 6, 2018
    Concord
    Thank you Neil, I'll do a thorough cleaning of the head sealer and see what happens.
     
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