Can't print. Message says that I need to replace color cartridge

Dear Thomas,
I have a ip90 for almost 3 years. A true masterpiece. I printed almost a thousand briljant A4 prints and never had a problem until now. The same problem you have. Changing cartridges does not help because the same message comes back every time. I solved the problem by placing a new print head Part QY6-0054-000. Price $ 54.50 sent by post. Good if you live in the US (BECK'S CRS in Illinois). I live in Belgium and had to buy it here.The part is available worldwide of course.
I hope this will solve your problem too!

Regards

Fons