Question about Canon PIXMA MP830 All-In-One InkJet Printer

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Defective Ink Cartridges for Canon PIXMA MP830

Upon changing the cartridges when empty, the large black ink cartridge causes errors such as U071 - "more than one ink tank of the following installed", and U150 - "the following tank cannot be recognized". Canon's solution is to replace ALL the cartridges with fresh ones. They are sending me a set for free. It appears to be a manufacturing problem with certain batches of their cartridges at this time. If the new set of cartridges does not fix the problem long term, I will inform them and ask for a new printer - or my money back.

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  • 7 more comments 
  • pjkozar Apr 08, 2008

    Small black cartridge exhibited U150 & U071 errors intermittently right out of the box. New cartridge fixed that. The first large black replacement cartridge exihibited similar problems after working fine for a week. So far have replaced two nearly full cartridges. The replacement cartridges were purchased from Costco.

  • mukatsuita Apr 11, 2008

    Getting the same problem, don't want to buy more of these expensive cartridges, I'll call tech support and hope that they'll send me some replacements...

  • Anonymous Apr 13, 2008

    I have the same problem. The Canon MP830 sometimes refuses to recognize the large black cartridge or says that I have a duplicate there. Of, course I don't.  Now, the MP830 is beginning to refuse to recognize the cyan and yellow cartridges when they get low on ink but not yet empty. EXPENSIVE SOLUTION:  I replaced half full cartridges and the problem was momentarily solved. Still, I hate to throw out a half full ink cartridge just because Canon won't make a smarter machine.  I am fed up.

  • KTinnes Apr 15, 2008

    I have the exact same issue - I am getting U071 also - I need this fixed asap! I need my printer :o)

  • apriltink Apr 17, 2008

    I am REPEATEDLY having the same problem. Duplicate cartridge of magenta, cyan, etc. Of course there is no duplicate. VERY FRUSTRATING! I have not called Canon yet. I am glad to have found this website, at least I know I'm not the only one, and that it is an issue with this model printer. Thanks!

  • lincie Apr 21, 2008

    same problem with the ink cartridges - "more than one ink tank of the same color". i've been thru the online "how to fix it" which didn't work. i will call canon & get replacements.

  • Anonymous Jun 18, 2008

    I keep getting an error "more than one black ink cartridge" on my MP830, buth there are supposed to be 2 blacks in this thing. Once in a while I can get it to scan if I take out all the cartridges and put them back in.

  • Anonymous Jun 23, 2008

    same problem

  • awumon Dec 31, 2008

    I either get more than one cyan or more than one black ink cartridge errors.



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1. Just open and close the cover a bid, this will initiate new checking of all ink cartridges
2. clean the contacts of the inkcartridge chip e.g. with spirit
3. Press the reset/stop-button for >10s to quit the error ... but be aware that the ink level will no longer shon correctly

Posted on Aug 29, 2008


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1 Answer

After changing the ink cartridge it gives me the message, the type of print head is incorrect...Canon MP830....I installed it over and over again, same result with several other cartridges

This can happen with certain types of compatible cartridges. the large black is usually the issue. Try unplugging the printer from the power for 5 mins. Also Try replacing the large black with a different brand, compatible cartridges are great for saving money but can cause some issues with the electronics. I recommend G & G Brand compatibles. they have been rated very well in PC Magazines and give no issues with recognition.
Regards GM

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Printers have a mechanism to detect refilled cartridges. By default it does not accept refilled ones. But there's a work around. Have a set of two (preferably 3) cartridges , refill and cycle them. This way the printer wont be able to detect that you have inserted a refilled cartridge.

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1 Answer

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Hi there,

Error U071 : More than one ink tank of the following color is installed. U071.
Action : Confirm that the ink tanks are installed in the appropriate positions.
The machine will not print if the wrong type of ink tank is used, or if it is installed in the incorrect position.
Be sure to install the ink tanks in the correct order. The proper arrangement from the left is Black (CLI-8BK), Black (PGI-5BK), Yellow (CLI-8Y), Magenta (CLI-8M), Cyan (CLI-8C).

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That error is from a defective ink cartridge, if all are installed correctly. Most often I've found the 5BK cartridge to be defective. If the store won't exchange it you might call Canon at 1-800 OK canon

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sometimes when you change your ink it doesnt register.hold down the stop/reset button and it will bypass that

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Refilling Ink in Canon Pixma MP830

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