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If the black ink will not print then the print head is faulty and needs to be replaced to fix this issue. First I would try cleaning the print head to see if you can get the black ink to print
If cleaning does not correct the issue then it is definitely a bad print head and will need to be replaced
where can i get this done
You can run a print head cleaning using your control panel on the printer itself.
I have done this several times
This is a link for the print head and there should be a lever beside the printhead that releases the print head to replace it
can i change this my self