Print Head Replacement for HP 6978

[DER001]

It appears that my blue ink nozzle is non-functional. I've tried all of the diagnostic fixes available to no avail. The other colors work fine and the printer responds to all cleaning instructions, etc. except for the blue! I'm thinking I need to replace the printhead. If this is the case, what part should I order?

[Kuroi_Kenshi]

Hi @DER001,

Welcome to the HP Support Community! 

Thanks for reaching out about your query regarding your printer!

We're thrilled to have the opportunity to assist you and provide a solution.

Consider a Deep Cleaning Before Replacing

If you haven’t already, try a manual printhead cleaning:

1. Remove the ink cartridges.
2. Dampen a lint-free cloth with warm distilled water and gently wipe the printhead.
3. Let it air dry for 10 minutes, reinstall the cartridges, and run the cleaning cycle again.

Confirm Printhead Replacement Compatibility

• The HP 6978 uses the HP 906XL, 902, and 902XL ink cartridges, and the printhead is integrated into the printer.
• The compatible printhead assembly is HP part number 9329A005AA (sometimes labeled CR324A).

Where to Buy a Replacement Printhead

If you need a new printhead, try:

• HP’s Official Parts Store: parts.hp.com

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Best regards,