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

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Canon MP780 The problem is, the cartridge tray does not move. When you open the upper part of the printer, say to replace ink cartridges, the tray should move back & forth and stop at the center. Of course it must move back and forth to print also. No movement at all.

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  • matafied May 08, 2008

    Thanks for your expert suggestion.




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I have taken the time to research this question on your behalf, the thing is the configuration on the canon needs resetting and also the data chip needs replacing, this process cost's alot more money than what the printer is actually worth, so my advise, buy a new one unless you have it under warranty, take it back

Posted on May 08, 2008


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How do you change the printer cartridge, please? I have mislaid my manual.

First make sure that the printer is on and the front cover and output tray are open. Next open the paper output cover by rotating it down towards the output tray. The ink cartridge carrier should move to the ink replacement position on the right side of the printer. Push the cartridge lock lever down until it clicks to unlock the cartridge that you need to replace. (The color cartridge is on the left.) Pull the cartridge towards yourself to remove it. Now open the replacement cartridge packaging and remove the protective tape from the cartridge. Push the new cartridge fully into the open spot from removing the old cartridge. (The label should be up and the copper covered sections should be down and facing forward.) Now push the cartridge lever lock up to lock the cartridge in place. If the lever doesn't move, check that the cartridge is fully forward in the slot. Finally close the paper output cover. Wait for the printer to complete the print head clean cycle before using the all-in-one.

Note: only remove and replace one cartridge at a time. Work quickly to minimize the chance of the ink system drying out after removing the protective tape.

Canon has the steps to change any ink cartridge on the Pixma MG4250 support site in the FAQ labeled Replacing an ink cartridge. The full text and pictures are available here: . You can also get the User's Guide and other documentation here: .

I hope this helps.

Cindy Wells

Mar 22, 2016 | Canon PIXMA MG4250 Inkjet Multifunction...

5 Answers

How do I change ink cartridges on Canon Pixma MX700?

1 Turn on the Canon MX700 printer by pressing and holding down the "Power" button. Open the paper output tray by pulling up on the tray. An arm will unfold from inside the printer and hold the tray open.

2 Apply pressure on the ink cartridge tab and remove the ink cartridge. A flashing light on the outside of the ink tray will indicate what cartridge needs to be replaced.

3 Remove the film, orange tape and protective cap from the replacement cartridge. You can throw away any trash. Do not touch the metal contacts on the new cartridge; this may cause the cartridge not to work.

4 Insert the front end of the replacement cartridge into the ink holder. Make sure you are placing the correct color in the correct spot. There is a sticker on the outside of the holder indicating what color goes where.

5 Apply pressure on the cartridge where it says "Push" until the cartridge snaps into place. The once flashing light should turn a solid red indicating the cartridge was replaced correctly.

6 Close the paper output tray. The Canon MX700 will start cleaning the printer heads. You cannot print during this time. The entire process may take a minute or two.

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Mar 15, 2011 | Office Equipment & Supplies

1 Answer

Hi, How do i check ink levels of canon pixma mp780? How to know when to change cartridges ? thanks in advance. Amit Bhatt

Your Canon MP780 will have the ink levels displayed on the screen.

Also, while printing on the Canon printers you would usually get a window on the screen showing you the level of ink in the printer.

And here is a link on how to replace the ink cartridges on your printer

Dec 16, 2010 | Canon PIXMA MP780 All-In-One InkJet...

1 Answer

How do I install ink for the Canon Pixma MP780 all-in-one inkjet printer

There should be a button on the right hand side of the printer. Depress it and the lid should open. Open it all of the way and the carriage should move over so you can remove and replace the cartridges.

Sep 29, 2010 | Canon PIXMA MP780 All-In-One InkJet...

1 Answer

Canon Pixma MP780. Recently my color ink

Have you checked to see if the jet area on the bottom of the ink cartridge has a blackish sludge on them? It might be that the area that the print cartridges are purged/cleaned to one side of the printer (sometimes called a service station, or spitoon) has built up excess ink that has gotten thick and high enough that as the carriage goes over that area the bottom of the cartridge gets polluted with the blackish sludge. It will work slightly into the jets where the ink comes out and cause discoloration, even after you change the color cartridge. Open the unit to look inside with a flashlight for build ups and clean it (if you find some) with disposable things like cotton swabs, coffee stirrers, whatever you have that wont damage anything inside. Another cause could be mixing of the cyan and magenta and yellow somehow inside making a dark color representing black - but replacing the cartridge would cure it immediately.

Jun 19, 2010 | Canon PIXMA MP780 All-In-One InkJet...

1 Answer

When I try to print I get a LOUD tapping noise. Also ink cartridges do not return to middle position when I open the machine, though I can manually move the cartridge case (which may or may not have been...

Try unpluging the printer from the wall power then move the carriage all the way to the left side. While you are moving this make sure there is nothing blocking or catching the carriage. It should move over easily with using a lot of force. After it is all the way to the left plug it back into the wall with all the covers closed. It should reset itself to the default position. After it stops open the lid to see if the carriage comes to the cartridge replacement position.

Apr 13, 2010 | Canon PIXMA MP780 All-In-One InkJet...

1 Answer

WRONG CARTRIDGE and Printhead does not move MP780

your printer ink cartridge can not access (move to middle) when you open up the cover, you may try
1) try to open right side cover you move the cartridge by hand (power off) to middle position, then take out the cartridge and reinstall it then power on, the cartridge moving right, you may open up the cover again if the cartridge go back the middle position which means your printer works normal. still stop moving go next
2) check the cartridge initcial sensor at righe side, the cartridge moving to the end of right should be touch this sensor, find out it and check there is good touch (click) by the cartridge body. adjust the sensor position maybe needed.
3) cartridge is stucked sometime also check the cartridge moving rail hard moving, need to drop oil to lubricate.

Feb 07, 2009 | Canon PIXMA MP780 All-In-One InkJet...

2 Answers


open the whole cover of the printer (look in the front part just below where is written cannon lift it up). you will find the instructions on how to change inside. keep the printer on.

Sep 30, 2008 | Canon PIXMA MP780 All-In-One InkJet...

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