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 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

Posted by on

  • 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 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

    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

    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

    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 :-)



2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert who has written 50 answers of more than 400 characters.


    An expert whose answer got voted for 20 times.

  • Expert
  • 119 Answers

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.

    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.


  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert who has answered 1,000 questions.

  • Master
  • 1,665 Answers



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Printer says wrong cartridge, even after replacing it.

In most cases the printer driver software can have errors while being in use or is shut down. So to reset remove your printer from the PC and uninstall the printer software. Now reinstall the printer software and then connect the Printer to be detected as a new hardware as it will be installed. Now check the printer properties to see the ink levels.
Activate head cleaning before a test is taken . Sometimes it is possible that the head is not reacting to the need of the PC command or can be an issue with ink drying or poor ink cartridge contacts. Sometimes the power supply unit must be checked as a poor SMPS unit can deliver low voltage and cause issues to the printer function. Check all the leads and connections of the mother board , the tags to the ink cartridge. Also check the mechanical settings of the ink cartridge , if jammed or tight remove motor and manually free the drive before it is set back.

Thank you for using Fixya

Sep 02, 2011 | Canon MultiPASS MP730 All-In-One InkJet...

2 Answers

HP LJ p3005 dn printer will not recogonize hp print cartridge.

you may use a non genuine toner cartridge, check another working cartridge

Mar 30, 2010 | HP LaserJet P3005dn Printer

1 Answer

Cartridges do not Move & the Printer Shut Downs Automatically

tell if the cartridge iss moving a litle or is totaly bloched

Sep 06, 2009 | Canon Pixma iP6210D InkJet Photo Printer

1 Answer

Won't print

silly question first, have you taken the film of the cartridge connectors?
if not then do.
if you have removed then my hp printer has done this and as far as i am aware it is due to the connections on the part that holds the ink cartridges. they wear down the same as on the cartridge.
this makes the machine not able to see the cartridge.

Feb 26, 2009 | Epson Stylus C46 InkJet Printer

1 Answer


When inserting a new cartridge, you may receive a prompt

"The installed ink cartridge differs from the original ink cartridge for the printer. Your printouts may be different from those printed using original ink cartridges. Do you want to continue using the currently installed ink cartridge?"

If you click Yes, printing will continue. If you select No, you will be prompted to change the cartridge. Manufacturer prompts may vary.

Nov 21, 2008 | Brother MFC 420CN All-In-One InkJet...

2 Answers

Wrong Cartridge

replace print head. print head is bad.

Jul 27, 2008 | Canon MultiPASS MP730 All-In-One InkJet...

2 Answers

Ink cartridge

The real problem is that the waste ink tank is nearly full

Correct code procedure for resetting the Canon MP370

Reset Waste Ink
By pressing the black button

with the star (in a
head ?) above it, followed by
scan, copy, scan
2) Select TEST MODE (press right

arrow button 13 times).
3) Select [8] PRINTER TEST
4) It'll now say "- 8-2 +" press

the right arrow key once
to get "- 8-3 +" Hit ok.
5) Select 0. [INK COUNT].
6) Press the ok key.
7) It should return to showing

the "8:
Printer Test - 8-3 +"
8) Press the [Stop/Reset]key -

black key with triangle and
circle on it –
(returning to the state of 3)),
and then press the [ON/OFF]

Good Luck and don't blame me if it
goes wrong !!!!

Now you can print again, but it has not solved your full ink-tank, that has to be solved in future.


Jul 08, 2008 | Canon MultiPASS MP370 All-In-One InkJet...

1 Answer

MFC 210C Ink Problems


did you watch the display after replacing the cart?
Very often the machine asks if you have changed the cart and demands an answer (1 for yes).

You can try to do an update of the firmware, too. Go to , choose your country and then your machine. Download a small update tool and run it.

If it aint getting better:
Do unplug from power outlet (even though you have done already) wait 10 Min. leave scanner cover open and take all carts out. Plugin to power again and leave scanner open. Wait uintil machine gives a warning signal. Reinsert carts and close cover: now watch the display and give always the answer YES(1).

Mar 04, 2008 | Brother MFC 210C All-In-One InkJet Printer

Not finding what you are looking for?
Canon PIXMA MP780 All-In-One InkJet Printer Logo

202 people viewed this question

Ask a Question

Usually answered in minutes!

Top Canon Office Equipment & Supplies Experts

old marine
old marine

Level 3 Expert

2097 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers

Are you a Canon Office Equipment and Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides