Printer does not print the blue ink and clean printheads does not show the blue blocks

I cleaned my printheads numerous times and ran the printing test but the blue blocks do not show up. There are no streak lines in any of the other colors. How do I fix this problem?

Hey there @mvelalis!
Thank you for posting on the HP Forums!
I would be happy to provide some assistance regarding the cyan not printing. If you have already run the printhead cleaning with no success in getting the cyan to print then I suggest removing the printhead from the printer and manually cleaning the copper contacts. The printer takes 4 print cartridges and 2 printheads. The printheads need to be replaced like cartridges but not as often. The printheads are what actually put ink onto the page.
To manually clean the printheads click: http://support.hp.com/us-en/document/c01609042
I was also able to locate a document regarding Fixing Print Quality Problems for the HP Officejet Pro 8500 Premier (A909n) and 8500 Wireless (A909g.... I suggest going through the documents for possible solutions to your issue!
Please post back and let me know how it goes!
Cbert
I work on behalf of HP.
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Please read this post then provide some details. What printer model? What operating system? Are there any error messages on the printer or computer screen?
Is your printer still in warranty? You can check with HP's warranty tool here.
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If your problem is solved please click the "Accept as Solution" button ------------V
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When you set the printer to print in grayscale did you also select "Black ink only"?
HP and other printer manufacturers have different printer technologies for different needs.
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The document here describes how ink is used. While the document is written for HP Inkjet printers the same principles apply to inkjet printers from other manufacturers.
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I am not an employee of HP, I am a volunteer posting here on my own time.
If your problem is solved please click the "Accept as Solution" button ------------V
If my answer was helpful please click the "Thumbs Up" to say "Thank You"--V

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Printer does not print the blue ink and clean printheads does not show the blue blocks

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