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marvinmorr
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HP DesignJet 500-42 =Printer head error message 78-04?

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HP Design Jet 500
Microsoft Windows 10 (64-bit)

Can the HP Expiration date (smart chip) built into HP 11 Printer Heads be disabled?  I cleaned , flush  & pulled ink from Ink Cartridge thru HP 11 Printer Heads, & now have error message 78-04. Any suggestion from the Community?   Is there a less expensive Printer Head that will work with my Plotter?

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Repairatrooper
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Can you confirm the error code as there are no 78 codes listed in the service documentation for this model.

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