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Old Jan 29, 2008, 12:11 AM   #1
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Join Date: Jan 2008
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:whack:I was running CISS system on my mp830 got an air lock so decided to fix it.

Every time I put the cartridges in got the error message (U150) one or more ink tanks could not be reconized. Finally went out and purcheased canon cartrdges and still got the error message.

Spent three days trying trying reset and stop buttons, putting the tanks in and out and cleaning. turned the computer off and the printer at the wall outlet and in the morning when I turned them on, YAY! the printer worked.

During the 4th day I turned the printer off via the maintenance program and when I turned it back on, The same message came up and I spent the rest of the day trying to reset it angain to no avail. Finally turned the compter off for the night and the next morning the printer worked again.

Moral to the story: If you can't get rid of the error message and you have tried replacing cartridges etc turn the computer and printer off and then turn the printer back on. I havn't had the error message since.

At least that is what worked for me. Hope this helps someone!
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