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Title: Defective cartridges after very little printing
Review: I purchased these cartridges in March & have printed about 30 pages using these cartridges. Suddenly they no longer work & keep giving the error message--Remove and check cartridges. I have followed all the cleaning & correcting procedures suggested in the online forums & still can't get rid of this error except by replacing these (should be good, but aren't) cartridges. Return period has expired, so I'm not a happy user at all.
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