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  1. SP540 Cyan printing issue

    Hello Phototec, Print issue was the result of a lightning strike... it had zapped the CPU. The tech tried all the main suspects but after a process of elimination the fault was traced back to the main board. I lost our HP Officejet at the same time but luckily the computers were all powered...
  2. SP540 Cyan printing issue

    I recently had a problem with random pattern printing of the black head. After removing all ribbon connectors and cleaning the contacts with an electronic spray cleaner all was working well again. However, after a couple of good days the cyan head is now printing with a gradient pattern... it...
  3. SP540 Black head printing randomly

    Hello Dukebrown... Thank you for the tips. I have had this machine for seven years now and it still confounds me. Oh for the old days when the brush ruled and the only technology that mattered was between your ears... This New Years I will have been signwriting for fifty one years and...
  4. SP540 Black head printing randomly

    Hello Guys, I have had this persistent problem with the black head laying down a random pattern when printing. It is not all the time but occurs sporadically. I have had a tech out twice... at first they thought it was the main board which they replaced... no difference so they refitted the...
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