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HP Recommended
macOS 10.12 Sierra

Hey! I found some threads on this subject but have tried all the things told to the others - restarting printer and having it re-set up. I installed new 302 ink cartridges last night and they worked fine for about 20 minutes and then all of a sudden stopped. The error message reads INCOMPATIBLE CARTRIDGES which isn't true, I have the real 302 colour + black installed. Does anyone know how to help?

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