12-28-2019 04:28 PM
Are your cartridges HP 564 or third party cartridges? Are they new in the box, or have they been opened and/or installed in a printer? Are the cartridges in warranty? See the document here for warranty information.
What is the issue you are having with the Photosmart 7520? Are there any error messages? Provide some details, it may be possible to get things working.
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