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Changes to HP Envy 7640 Printhead Replacement Introduction

Edit by Alessandra Chuquillanqui

Edit approved by Alessandra Chuquillanqui

Before
After
Unchanged
Introduction
Replacement of the printhead violates the warranty on HP printers. Proceed through this guide with caution.
Summary
Replace your printhead to resolve issues involving the appearance of the printed wordpage.