Question about Canon Pixma MP500 All-In-One InkJet Printer

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U071 more than one ink tank error ....... help!!!

Hi ive got a canon mp500 printer and im having a problem now ive changed offices. all my ink is new and all original canon and the correct numbers, but it says "more than one ink tank of the following colour is installed" and the screen points to the smaller black cartridge. but it needs 2 blacks anyhow a 8 and a 5. so im scratching my head whilst using my old crappy epson. please help, james. p.s - i dont have an instruction book sadly so if i need to press any buttons etc please be gentle with me and indicate where/what colour or shape the button is your references please - sorry for being lame! thanks

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  • 2 more comments 
  • do8erman Sep 19, 2007

    thanks to everyone who has made effort here to help me out, ive tried the lot and after a rigerous cleanse exercise and turning on/off etc i think i'll now take the risk of ordering a whole new set of canon carts - if that doesnt work im taking it in the back garden and giving it a damn good kicking, then going to buy an new epson which i should have done originally!

  • Anonymous Apr 17, 2008

    every time i try to print something an error message saying "more than one

    ink tank in the following color is installed (magenta ) On the printer it reads Check ink 0071 which I do and one cartridge is always blinking, not allowing me to print anything. This machine hasn't been used a lot and should not be having these problems.


  • moeinv Jul 17, 2008

    my canon MP830 has had this problem for a while. At first I just

    reinserted the offending cartridges, which might or might not work,

    Now nothing is working.

  • Anonymous Jan 24, 2009

    I'm having the same problem and the worst part id it's a new ink. It worked when I first installed it, but noe its not reading at all. I'm gonna turn it off for a couple of days and wait for a reply.



11 Answers

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I think I have come up with a solution!

When the error happens:

Open the cover and re-seat the cartridge.
Tilt the whole printer forward about 30 degrees or more
Close the cover.

This has worked for me multiple times now. I think there is a small sensor behind the contact chip that detects ink levels and when my printer is flat the level of ink is lower than the sensor, when I tilt the printer the error vanishes because the ink covers the sensor. Though I am not sure why the software in the printer determines that there are duplicate cartridges instead of just a low ink warning.

If you still can't get it try taking a standard pencil eraser and gently rub it over the contacts to clean off any oxidation, also do this to the prongs that contact the chip that are inside the cartridge carrier, They bend easily so do it very lightly.

Posted on Jun 28, 2008

  • JC Cote Jul 24, 2011

    You are a genius! It worked on the second try after I reset the power still in a tilted position. Many Thanks


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The problem occurs so regularly that it is clear that there can only be one reason for it:
1. the Canon cartridges work fine for some weeks (1-6!) and then begin to give these error warnings fairly randomly from the point at which they fail;
2. they give the same kind of error warnings - as reported here - through a range of Canon printers;
3. cleaning contacts on the cartridges, or any other cleaning of the contacts in the holder (which admittedly are smeared with ink), makes no difference as the error reports repeat in various randomised forms as reported on these pages and others!;
4. re-installing drivers etc. makes absolutely no difference;
5. the only ‘cure’ is to replace with original cartridges which solves the problem regularly - although some unlucky soul might just get yet another faulty cartridge(s);
6. the ‘good’ chips on these proven cartridges can then even be re-used on non-Canon cartridges;
Sorry - but having tried each and every other logical path it is clear that Canon cartridge failure is the only cause and we should all be writing to the manufacturer and demanding suitable compensation expenses and our time (at least 5-6 hours in my case!) - this is why I have taken the time to list this so you can all cut and paste and send it off with a suitable (polite, I hope) comment.
It has to be said that, cartridges apart, my Canon Pixma MP-830 is brilliant and lives up to the reviews which I read (without a hint of this particular problem!) before buying.

Posted on Nov 23, 2007

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On other sites I've seen that this is a faulty chip in the cartridge. With a new one, it should work. Further, canon will apparently reimburse you for the cartridge.

Finally, I had the same problem, and found that opening and closing, taking out the cartridges, and putting them back in often worked ... for a while. Pretty damn annoying. In retrospect, I wish I'd bought a 730, which doesn't have chips -- fewer problems, and you can use cheaper imitations.

Posted on Nov 13, 2007

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I just cleaned the metal contacts on the cartridge and the prongs inside the printer and it works now.

Posted on Jun 03, 2013

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Amazingly, I cleaned the gold contacts on both my IP6700D cartridge holder and the cartridge with nail varnish remover on a cotton tip, wiped them with the dry end, re-inserted the offending cartridge and hey presto - unbelievable - the contacts didn't even appear dirty so it may be some wax or grease or something. I didn't even need to turn it off and on - it just worked!!!

Posted on Sep 22, 2009

I'm having this problem too.With my cannon iP6700D as others have said it appears to be a cartridge problem and cannon will reimburse under.I'm sick of printer problems :-(

Posted on Jul 10, 2008

  • Jeff Stanley
    Jeff Stanley Dec 18, 2015

    This was happening to me also with a refilled cartridge. Even though I have a chip resetter, it still happened. In frustration, I turned the printer off. I then depressed the reset button and holding it down, depressed the on/off button. It worked. Just for the heck of it, I tilted the printer forward while it was off to make sure the sensors were covered in ink. However, since the cartridge was full to the brim, I don't see how that could have mattered. Good luck.


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Had the same error after replacing my black ink om my MP830.(UO71) I Put some Methylated Spirits on a cotton tip and gently cleaned the cartridge chip (allow it to air dry). This fixed my problem!

Posted on Dec 05, 2007

I get the same error on my ip6700d, I just lift the cover for a sec and put it down and it prints.


Posted on Oct 26, 2007

Check out canon's website for more can download manuals for their products I think there might have been a bad batch of ink cartridges recently. I ran out of black on my MP F20 all-in-one, installed a new one (always buy Canon cartridges) and all of a sudden my print head wasn't registering. I had to order the part, and when I installed it I was still having problems. Once I finally started to get ink going, it said the cartridge was empty already! Bought a new one today and after much fiddling finally got it printing but I still am not getting any blue out of the color cartridge (also a brand new cartridge). Oh well, I print 99 percent black anyways.

Posted on Sep 16, 2007

Take out all of the cartriges and the take out the container that holds them. Inside the container in the back are circle color index clean the index with que tips (does not have to be completely clean)install all cartriges and restart printer.

Posted on Sep 04, 2007

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I just turn off my Canon Pixma IP6700D printer from power and after turning on problem disappear.

Posted on Sep 19, 2007

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1 Answer


Hi there

For troubleshooting purposes,
Perform the following:

1. Open the printer and remove all ink tanks.

2. Insert a single ink tank in the printer then close the cover.

3. Confirm whether the printer recognizes the installed tank
properly. If it does, it will indicate it does not detect the other ink tanks, as
they are not currently installed in the printer.

4. Repeat steps 1-3 with another ink tank.

5. If the printer at any time indicates two of the same ink tanks are
installed, the cause will be the last tank installed. For example, if
you inserted an ink tank earlier, and you later inserted another ink
tank, and it said two of the same inks were installed, the cause of
the issue is the last ink tank.

Please come back and just gave a vote, it will gave me some satisfaction to know am helping some one so I will keep on helping.
All The Best: Pineworks

Feb 10, 2010 | Canon Pixma MP500 All-In-One InkJet...

1 Answer

Error code U071 , more than one ink tank of te following color is installed, is the message on the screen. This is not the case as each cartridge is different and correctly installed?

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).

Hope this hepls.

Nov 28, 2009 | Canon PIXMA MP830 All-In-One InkJet...

1 Answer

Error U071 ;more than one ink tank for black

your chip may get something wrong if the sensor is dirty or some ink goes over it!try to pull out the Bk carige and put it back again if not help try same but get some tishue and clean up the chip contact serfice!

Aug 24, 2009 | Canon Pixma MP500 All-In-One InkJet...

3 Answers

How do i change ink cartridge

open the front panel just lift it u can see the catridges inside that
remove those by just pushing them downwards you can see the instructions of how to remove inside itself in a corner of your printer
try it and buy new catridge and replaceit
or else refil it with the proper advicer
thank you

Apr 22, 2009 | Canon Pixma MP500 All-In-One InkJet...

1 Answer

I have error U071. I have been refilling the

You will need to get a new(er) print cartridge and replace the old one to eliminate the problem.

Feb 18, 2009 | Canon Pixma MP500 All-In-One InkJet...

1 Answer

Error U071

Make sure that the inks are not re-manuafactured ones with chips taken off genuine canon inks. It is possible that the wrong chips could be fitted to the wrong colours.

Dec 04, 2008 | Canon PIXMA MP830 All-In-One InkJet...

1 Answer

Error U140 & U071 for Cannon pixma mp800

Thanks for checking back my printer problem. Solved the problem--purchased a new printer.My big problem now is repairs on my Mitsubishi WD 52725. I do not think I will buy a new one of those.I will purchase your help package for help with that. Please advise.


Nov 26, 2008 | Canon Pixma MP800 All-In-One InkJet...

3 Answers

Canon Pixma MP500 UO71 error

I am also getting this error message. For a few days I could take out the offending cartridge and the printer would forget for one printing and then go back to telling me that two of the same cartridges were installed. HELP! I am about to chuck it out the window, though I believe CANON should send us all new ones.

Aug 15, 2007 | Canon Pixma MP500 All-In-One InkJet...

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