Question about Health & Beauty
I added my post today with the same problem, and thought I'd share what I since learned. Apparently this "Alarm light/U150" is common with several Canon models. The U150 indicates a faulty electronic chip (on the ink cartridge). Though I tried cleaning the sensor with isopropyl alcohol, and also tried removing all the cartridges, unplugging the printer for 45 seconds, then reconnecting,etc. as I had read might help, I still had the same frustrating problem. Contacting Canon was the solution that worked for me. First I emailed, but decided I didn't want to wait for their response. A call to Canon Tech Support (1-800-385-2155) was quick and painless. They will more than likely send you a new cartridge, but you'll need to have your serial # & date of purchase handy.
Posted on Dec 11, 2007
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