Size:4 Pack ★【COMPATIBLE PRINTER】 HP Officejet 6220 Printer HP Officejet 6800 PrinterHP Officejet 6812 Printer HP Officejet 6815 Printer HP Officejet 6820 Printer HP Officejet 6822 Printer HP Officejet 6825 Printer HP Officejet Pro 6230 Printer HP Officejet Pro 6830 Printer HP Officejet Pro 6835 Printer HP Officejet Pro 6836 Printer ★【PAGE YIELD】 Black (934XL): 1000 pages Cyan/Magenta/Yellow(935XL): 825 pages (at 5% coverage of A4 paper) Tips: The page yield is an estimation based on the industry standard of 5% coverage only. If you print more than 5% per page, then the page yield is significantly less. ★【EASY TO USE】 STEP 1：Please do not touch the chip. STEP 2：Hold the cartridge upside down for 1-2 minutes. STEP 3：Remove orange protective cap carefully. STEP 4：Install the cartridge into printer until it locks in the slot. ★【USER MANUEL】 ✔Please rip off the color tape before you install.(With some tissue in your hand for any case of leakiness) ✔If your printer appears an alert likes "Non-Genuine" ,press "Proceed" / "Continue" / "Accept"or "OK" to ignore the prompt. Additional alerts may display when you print or copy - dismiss the alerts accordingly. ✔When you receive an error "Cartridge cannot be recognized" or "Replace Cartridge" , please remove the affected cartridge and gently wipe the chip with a lint free cloth or rubber eraser. If issue persists, turn off printer and unplug the power source for 30 seconds then try again. ✔After new cartridges installed, if streak happens,try re aligning your printer heads,then hit your printer clean option and that should take care of this issue.
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