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

2 Answers

Pixma mp500 each time i switch on printer the following txt comes up "uo71 more than one ink tank of the following colour is installed" i still have all the original ink tanks installed this is driving me crazy please help.

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  • ChristmaSnow Nov 07, 2007

    Im having the same trouble. My printer was working perfectly fine, no problems what so ever. I printed approx 10 pictures then all of a sudden on the printer U071 popped up reading more then one ink tank of the follow color is installed and it shows the blue one. However I only have one blue on installed and nothing changed prior to this error report, I had just printed pictures. Ink wells are all full and Ive been stumped ever since. Nothing else will work either; cant photo copy or scan this report keeps coming up. When I take out the blue, since system shows more then one blue, an error report pops up that there isnt any blue. Its driving me crazy! Please help!!

  • Pamela Warren Nov 28, 2007

    I have same problem original ink tanks a full have reset, reinput and still same error and it is on the magneta color

  • Anonymous Dec 09, 2007

    Yes, I have the same problem. My screen says that I have two blacks installed in the same place and the alarm light is on. I just tried taking out the cartridges and reinserting them and of course turning off the printer and computer and turning them back on.

  • Anonymous Dec 10, 2007

    Me four. I hate this thing. Did anyone figure out an answer? Thanks!

  • Anonymous Dec 12, 2007

    Me five. It tells me I have two black cartridges (duh) and won't print and when I remove PGI-5BK it tells me it doesn't recognize the cartridge in the empty space that PGI-5BK occupied (and won't print).

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2 Answers

I had the same problem. Apparently, Canon released a "bad batch" of these ink cartridges which causes the error message. It has something to do with the chip on the front of the cartridges.

Contact Canon and encourage them to remove these chips from future cartridges... and stop the price gouging of their customers.

Posted on Dec 12, 2007

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  • Master
  • 2,985 Answers

Canon Technical Support team will be able to help here. This seem a common problem with the printer firmware.

Posted on Jul 09, 2007

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Related Questions:

1 Answer

UO43 error there is no ink cartridge there, but when there is an ink catridge UO71 it says more than one ink cartridge


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

Mar 08, 2010 | Canon Pixma MP500 All-In-One InkJet...

1 Answer

ERR0R U071 MORE THAN 1 INK TANK OF THE FOLLOWING COLOUR IS INSTALLED. (CANNON PIXMA MP500)


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

Alarm: UO71 more that none ink tank...


That means that you either have a defective ink tank, or there are two of the same color installed, check the label for the inks, the one that flashes is the one with a problem.

Oct 06, 2009 | Canon Pixma iP6600D InkJet Photo Printer

1 Answer

Printing only b&w from a colour Canon Pixma 500


The Canon will not allow you to print with empty color tanks, or without them installed.Canon does not want the ink to dry in the printhead which would destroy he printhead.

Sep 01, 2009 | Canon Pixma MP500 All-In-One InkJet...

1 Answer

Canon MP500 error message


If you're using Canon OEM (branded) cartridges you're going to need to ID the problem chip/cartridge so I'd try and get hold of some empty originals from somewhere (CartridgeWorld or similar perhaps?) and put those in as replacements for one cartridge at a time until you ID the problem cartridge/chip

If they're non-branded then chances are you do have more than one of the same chip but the solution is much the same...


If all else fails, take the printer to a friendly retailer who sell Canons and ask them to help you ID the problem cartridge.

Jan 19, 2009 | Canon Pixma MP500 All-In-One InkJet...

3 Answers

UO71 More than one ink tank of the follwoing color is installed/U140 The following ink tank cannot be recognized


i had the same problem and when i checked inside to see why it was not working with the cyan i saw that a sensor was the problem... it had fallen out. check it out and let me know if it is the same with yours.

May 15, 2008 | Canon Pixma MP500 All-In-One InkJet...

1 Answer

Canon Pixma MP500


When installing or replacing an ink tank, only one of the ink tanks should be installed. If the ink tank is not installed correctly, an error message will display.Press on the tab to release the ink tank, then remove it from its slot. If you are replacing multiple ink tanks, make sure to replace one by one.
Give a thorough check up to confirm any colour ink is not twice loaded (cannot be loaded in a single slot,may be in another slot )
May be any defective ink cartridges

Mar 13, 2008 | Canon Pixma MP500 All-In-One InkJet...

6 Answers

UO71 More than one ink tank of the follwoing color is installed/U140 The following ink tank cannot be recognized


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!

Aug 29, 2007 | Canon PIXMA MP830 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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