Question about Canon Pixma MP800 All-In-One InkJet Printer

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PGI5BK Ink tank not recognized on MP600

Prblem occurred suddenly. Working fine one day (3 months actually), failure the next, for no apparent reason.
Printer wont work because original ink tank (3 months old) isn't recognised !!! Release and reseat - red light on..........until printhead returns to normal rest position, then light goes off and U150 message returns.
Repeated many times. Red light on when reseated in when printhead returns to normal rest position. Will a new ink tank solve problem??? If so for how long??? Is it a printhead problem???

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  • Anonymous Apr 29, 2009

    I have a similar problem. All of a sudden none of the print heads where recognized. No warning lights and an error message indicating print heads not recognized. Recycling the machine on and off did not fix it. Removal and re-installation of the print heads did not work.

  • Anonymous Mar 17, 2014

    I change printhead with NEW original item, but it don't works, no ink on paper.
    can you help me?

  • Anonymous Mar 23, 2014

    I bought a new printhead for my pixma ip90 printer.
    I correctly install it but it doesn't work : ink tanks are full, the printhead in unclogged, inks free come out but any ink is blowed on paper sheet.
    The some problem I had with old printhead.



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I had the same problem. The problem also manifested itself by not being able to automatically align the print head. I reset the print head. Problem solved.

Posted on Dec 11, 2007

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You say the "original" is 3 months old? You are out of ink. Replace the cartridge. Even when there is still a little ink in the "tank" it reports back to the printer as empty. And yes it will go through all its checks and still show empty. They don't last forever even if you don't use the printer. The ink evaporates out over time.

Posted on Nov 22, 2007


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1 Answer

Error code U150 The following ink tank cannot be recognized

First, make sure you have the right ink cartridges. Here are the right codes: CLI-8BK and PGI-5BK for black, Yellow - CLI-8Y, Magenta - CLI-8M, Cyan - CLI-8C.

If the ink lamp is off then an ink tank error has occurred. Try to remove the ink tank and re-seat it. Make sure you removed the plastic cover on the ink tank. If nothing helped, you need to replace the faulty ink tank.

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Reset Canon MP600 to the Factory Setting
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U150 ink error fixed!

I too was getting the error for unrecognized ink cartridge. Then the little green circ board fell out of the end of the ink cartridge and it hit me that maybe if I put in the little green circ board from the old ink cartridge of the same color, then maybe the ink cartridge would be recognized. It worked! So don't throw out an ink cartridge that still has ink just because of that error and hold onto your empty cartridges in case you need the little green/gold circ boards.

This works!

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U150 error?

My dad is having this same problem and has been for the last 5 months. It's not from the printer being new it's a defect in the engineering of the printer cartridge older. The yellow cartridge (being the middle) doesn't snugly fit and so it wiggles around losing it's connection with the printer. I fixed this by taking making tape and taping around the base of the cartridge. It's a tight fit and it doesn't disconnect itself ever. Hope this helps!

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