Canon IPF 750 Problems

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  • wglenn13
    • Apr 2025

    #1

    Canon IPF 750 Problems

    I have a Canon IPF 750 in my office. Earlier this year I started getting a 2F32 error. My prints were missing complete swipes of the printhead on maps and colors were distorted. I changed the printhead. This did not fix my problem.

    I called our local rep to come take a look at the printer. He said I needed a new purge unit. We bought that and he replaced it. This did not fix the problem either. He suggested replacing the printhead again because my "new" printhead could have become damaged before he installed the new purge unit. We installed a new printhead on the machine, and the problem was still there.

    I am now getting a 2F30 error. I try and do a head cleaning from the machine, and I get the 2F30 error every time and have to restart the machine. I ran a couple of nozzle checks with varying degrees of failures. I have attached a pdf showing some prints and the nozzle checks so everyone can see what my problems look like.

    Earlier this week we decided to just print all we could through the machine to see what happens. We are at the point of buying a new printer so what was there to lose. To my surprise a few of the maps actually came out perfectly. I could not find any correlation between in what order the drawings were printing and their quality. Sometime the first drawing was good, and then it went bad. Sometimes the first few were bad, and then magically a good one. Attached in the pdf is also a couple of photos of the good maps that printed.

    Any help is appreciated. I would rather not drop the money to buy a new plotter.
  • V-P
    Senior Tech

    Site Contributor
    500+ Posts
    • Apr 2011
    • 679

    #2
    Re: Canon IPF 750 Problems

    You have one train of black completely missing.

    That is the main (if not the only) issue with your printer.

    There are 2 reasons for that.

    1. Main board
    2. Flat cables kit.
    I am using the word "kit" because this is how you order the cables in this series.

    I would remove - alcohol clean - the contacts of the flat cable which go to the main board.

    Than your tech. can measure for "cuts" in the flat cable with the tool and also measure with densitometer the resistance of some elements in the mainboard.

    This way you know what to replace.

    Hope this helps

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    • Eddie
      Technician
      • Jun 2009
      • 31

      #3
      Re: Canon IPF 750 Problems

      i have seen there is an air leak in the ink tubes..this is nasty to fix.
      at each junction point where 2 tube meet, use lock tight b/w the tube and nipples
      or at the print head itself, right there is the air leak..clean the nipples DONT USE LOCK TIGHT THERE.

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