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Message 1 of 2
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Black Printer Cartridge Not Working

Hello. My black printer cartridge is not working in my HP Envy 4520 printer. I’ve bought 2 new black cartridges and it’s still is not working . It keeps saying to reinstall cartridge. What to do? Thanks.

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Message 2 of 2
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Black Printer Cartridge Not Working

Hi @Program1 ,


welcome to the HP Support-Community.


Maybe there is just a communications problem between cartridge and printer. Please clean the electrical contacts, you'll find detailed steps at these support-document:


HP inkjet printers - Cleaning the Contacts





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