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You could have a failed printhead, as it may not be sensing the ink tanks are in position. But it could just be an out of position ink tank.. For good measure id remove all ink tanks and reinsert them.
Also, have a look at this link, it may help resolve the issue.
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lets try removing all ink tanks.
Then, unplug the machine from power.. Then, clean the electrical contact inside your printehead that read the ink tanks.
Then, plug the machine back in and turn it on. Then, insert the ink tanks one at atime.. turning the machine off, and on after each ink tank
At the end of this, do you still get the error?
if so, do you get the error if you insert the black tanks first? Such as, does the error immediately start as soon as those tanks are inserted?