Canon MP830 Printer keeps saying that I have 2 Magenta Cartridges, but I do not.

On this site there is a solution for your problem.

The solution is meant for Canon IP4300, but can be used for Pixma MP830 as well.

http://tricks-collections.com/solution-canon-pixma-ip4300-error-6a00/

Regards

clean the lower end the tan and install it back

You can sometimes buy cleaning cartridges that contain fluid designed to clean nozzles. See if they exist for your model.

Are you using recycled cartridges? It sounds like someone stuck the wrong chip on one of your cartridges. I suppose it's annoying, but it shouldn't hurt anything - you'll just have to check out all carts when a "magenta" cart is reported empty.

THE INK CARTRIDGES :
This multifunction printer is compatible with all of the following ink cartridges. Here is a list of these cartridges and how they you can get them:

PGI-5 Pigment Black
CLI-8Bk Black
CLI-8C Cyan
CLI-8M Magenta
CLI-8Y Yellow

All of the ink cartridges are easy to install and/or replace; all you have to do is keep the printer ON, then open the cover it will come in the position and then unlock the cartridge which allows you to remove and replace the cartridge.

These cartridges cost any where between $10 and $15 each. But if you want a good deal, I would suggest purchasing your ink supplies from Costco Wholesale as they provide good prices on packages.

Open the printer cover and check to make sure only one Yellow cartridge is installed. If so, try the following:
Remove each of the other cartridges, one at a time as necessary and see if the error message changes. Start by lifting the cover, then wait for the printhead to move to the left so you can access the cartridges inside. Pull out one of the other cartridges ( not Y) by pushing its front tab back then close the cover. Check the display, repeat as necessary. The error should have changed to U043 (bad or missing cartridge) once you remove the bad cartridge. When you replace it, the printer should work. My guess is the Magenta or Cyan cartridge is causing your error.

1. Clean The Print Head Nozzles (Mac OS X) MP500 / MP800 2. Clean The Print Head Nozzles (Windows) MP500 / MP800 3. Confirm that the recommended ink tanks are installed properly MP500 / MP800 4. Install recommended ink tanks in the correct order MP500 / MP530 / MP800 / MP800R / MP830 5. Perform A Manual Print Head Alignment (Mac OS X) MP500 / MP800 / MP950 6. Perform A Manual Print Head Alignment (Windows) MP500 / MP800 / MP950 7. Perform the print head cleaning procedure on MP500 / MP800 8. Print Head Alignment MP500 / MP800 / MP950 9. Remove tape from the MP500 / MP800 ink tank 10. Replace ink tank(s) MP500 / MP800

I hope it helps!!!

check to see which cartridge you put in, photo magenta cartridges DO NOT work in the MP830. sounds silly but we see it all the time.

check to see if the short vertical black bar next to the magenta pattern looks ok, not brown or gray or streaky. if it is you may need a professional head flush, take the whole printer in for service.

I think it's the chips on the cartridge - the colour that it thinks it's duplicating! I took it off the black (duplicated) and put it on the magenta and it thought it had duplicate magenta cartridges!!

pleaz clean the cartridge sensor and also align cartridges by program in your manual