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  1. #1
    Technician
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    Lowell, MA
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    EC21-2F51 error on Canon 4000 (imagePROGRAF PRO-4000)

    Is there anything I can do first to avoid buying a new printhead?

    So, I use a Canon 4000 at a maker space and I came in this morning to find it had an un-numbered error on the screen. It said there was an internal error and that I should shut it off and restart. However it didn't respond to the power button or any buttons near the screen and the touchscreen itself didn't respond to my touch. I unplugged the machine and waited about a minute to restart.

    It went through some weird fast slapping noises and other strange sounds I've never heard, along with the regular wooshing...about two long cycles... claiming to be preparing the printhead, only to serve me in the end that same error from before. Only this time there was a history button which I could touch. There were "hardware" errors and "recoverable" errors. The hardware error was a list of four EC21-2F51 (4801) errors and the 5th error was EC21-2F53 (1478).

    Basic high level Googling came up with Canon's regular response that it might be a printhead issue and to call them to diagnose. The maker space captain called Canon and they said it's most likely a printhead that needs replacing.

    I own a bunch of large format printers already that have hit hardware errors I have yet to fix (Canon 8300, Epson 9890, 7900 and 4880). I managed to save the 9890 and extend its life 18 months a few years back so I'm aware that sometimes there are some deeper more "lower level" things we regular folks can do to resurrect our printers. I'm hoping maybe someone has some advice besides just getting the new printhead.

    Thoughts?

  2. #2
    Trusted Tech 50+ Posts
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    Re: EC21-2F51 error on Canon 4000 (imagePROGRAF PRO-4000)

    Hi there,

    These errors are normally indicative of the print head, yes. However, updating your firmware may resolve this issue but you will have to get a technician in to do this otherwise you may not get any help should something go wrong.

    Most likely it is your print head unfortunately

  3. #3
    Tech Specialist 1,000+ Posts Canuck's Avatar
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    Nov 2007
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    Re: EC21-2F51 error on Canon 4000 (imagePROGRAF PRO-4000)

    Ink in the tubes going to the printhead?

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