12-05-2013 07:49 AM - edited 12-05-2013 07:52 AM
I am unable to print as my screen says replace 940 black cart. I replaced it and the error will not go away. I tried powering down the unit and cleaning the printheads, but I keep getting same message and have not been able print or clean the heads. Any suggestions before I try/waste another new cart? Thank you.
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