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If you remove the ink tanks, and then unplug the printer from power ( dont just turn it off )
Wait two minutes, then plug it back in ( without the ink tanks )
What message do you get then?
Im not sure what you meant by the last message?
The in k cartridges, did you try removing them as I mentioned to see if when you power down and power up without the ink cartridges, if you still get the error message?