Can using a non-HP or refilled ink cartridge void my warranty on the HP Photosmart 7520?
Using a non-HP cartridge or a refilled cartridge does not automatically void the warranty or any HP support contract. However, if printer failure or damage is attributable to the use of a non-HP, refilled, or expired ink cartridge, HP will charge its standard time and materials charges to service the printer for that specific failure or damage. (Page 6)
From the official HP Photosmart 7520 E All-in-One Printer manual, page 6
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