Question about Canon PIXMA MP780 All-In-One InkJet Printer

2 Answers

Wrong cartridge yes we have been using "ink power substitute cartridges" with no problem and this perceived lite period it has taken to saying "wrong cartridge" also red light "alarm" flashing ...by the way these substitutes are $20 for 6 also they have changed the label on the "ink power" which used to read RC-6C now reads RC - 3/3e/5/6C now went to the store and purchased the $75 dollar canon inks still showing red light flashing "alarm" also "wrong cartridge" also the ink levels did not change to full after entering the canon inks $75 dollar batch. please can you advise! thank you

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  • 3 more comments 
  • Kol emerald Apr 04, 2008

    the printer has 5 cartridges ...and will play with what you have suggested now thank you
    Kol

  • Kol emerald Apr 04, 2008

    following all steps up to to 6 and reinserting 5 cartridges
    reinserting the cartridges the message is
    bought up "cartridge jam"
    when do we turn the power off

  • Kol emerald Apr 04, 2008

    greetings
    re did the whole lot
    can you please say in reference
    point 7) turn unit on whenst
    what number I turn the machine off
    as to what occuring
    message "cartridge jam" press OK
    whenst pressing OK all inks went to high level and then dropped now message "wrong cartridge"
    thank you for your responses
    regards kol

  • Kol emerald Apr 04, 2008

    greetings
    i am not that technical ..i know of someone whom twill pull it apart for me, so will try all the functions and will advise you on the outcome of it all ...
    may be a few nows or so...
    thank you all for the responses i appreciate all your efforts .. regards kol

  • Kol emerald Apr 07, 2008

    greetings
    just wish to advise the mister fix it just phoning through with the advise twill call and give us a quote for the for a new MP780 Printhead (QY6-0049-000)
    so thank you so much for every thing
    tis so amazing to have all the information at our finger tips
    appreciatively :)
    Kolleen Emerald :-)

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2 Answers

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Dear Kol emerald

Sounds like a hardware error on the printhead of the printer as it controlled by an Integrated Logical Circuit. (ID circuit) and the cartidge is being indicated that it is defective.

Even if you get a third one I guess it will happen again.

Sorry to tell you this but you may have to go to a repair service center for a new MP780 Printhead (QY6-0049-000)

If you want to do a hard reset of the printer try this, but with few hopes :)

  1. Verify that the unit is switched on.
  2. Open printer and remove cartridges.
  3. Unplug the power cord from the printer.
  4. Wait 30 seconds.
  5. Plug the power cord back into the printer.
  6. Open the top cover and reinsert both cartridges.
  7. Turn the unit on.
  8. Print a test page. If the problem persists, the cartridge should be replaced.

Posted on Apr 04, 2008

  • 2 more comments 
  • T.M.
    T.M. Apr 04, 2008

    Dear Kol emerald

    Sounds like one or more of the cartridges are not alligned very well, try to remove them and place them again.




  • T.M.
    T.M. Apr 04, 2008

    Dear Kol emerald

    You are turning off the printer at step 3.

    IMPORTANT:
    The"Wrong Cartridge" prompt is caused by a defective printhead, your unit does not recognize the installed printhead assembly, meaning that the printhead circuit has seized. Try to put the original ones, at the correct order and check again.

    I am 90% certain on this.

  • T.M.
    T.M. Apr 04, 2008

    Dear Kol Emerald since this is affected by the printhead please try to remove and clean it!!

    (The 10% possibility is that dried ink has blocked the proper function of the printhead) Do this and hope for the best.


  • T.M.
    T.M. Apr 08, 2008

    That is nice to know :)

    Hope your printing will resume without problems from now on after the installation of the new printhead.

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