Reviews were mixed people saying or thinking just replace the cartridge. Many said the printout featured ghost lines and scrawls. I followed the procedure Xerox used to service their copiers, which also had lines and smudges on the printouts. I replaced the cartridge and drum with EZ Ink compatible cartridges. So far both are working perfectly. I gave him 5 stars.
HP 62XL Tri-color High-yield Ink, Compatible with HP ENVY 5540, 5640, 5660, 7640 Series, HP OfficeJet 5740, 8040 Series, HP OfficeJet Mobile 200, 250 Series, Instant Ink Eligible, C2P07AN
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