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‎03-06-2019 04:37 PM

HP Recommended
Product: HP Photosmart 7520
Operating System: Microsoft Windows 7 (64-bit)

Black ink cartridge quit printing. Replaced it, no change. Msg: " Printer or ink system failure. Turn printer off, then on. If problem persists, contact HP." Manually cleaned out-of-warranty printhead several times. Replaced printhead (cleaned contacts, new printhead, new cartridges) Printed color, but not black. Cleaned contacts again. Reinstalled printhead & cartridges. Printed a few pages, color & photo black OK. After printing about 10 pages all cartridges failed & blank pages came out. The internet connection is wireless. What is my next step?

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