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fb550 missing nozzles

  1.

    FB550 Nozzles missing

    hello all, we have a HP FB550 and had all these problems with the bad batch ink. Now we have a 3rd party ink in the machine. Everything looked good, but currently we have missing nozzles on one magenta print head. We have flushed the system and refilled with ink. The first nozzle test was OK...
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