Package Included: 1xBlack/Yellow, 1xCyan/Magenta (2PCS, BY / MC), C4900A / C4901A, 2 pcs 100% compatible with the following printers: . HP Officejet Pro: 8000 - A809a , 8000 Enterprise - A811a , 8000 Wireless - A809n / 8500 - A909a , 8500 Premier - A909n , 8500 Wireless - A909g / 8500A - A910a , 8500A Plus - A910g , 8500A Premium - A910n 1. My printer reports "The following print head has a problem" or any error message, how do we process the next step? LKB Answer: Just skip the message, and press "OK" or "Continue" and go on printing. 2. My printer did not recognize the print head, how do we do? LKB Answer: ? please take off print heads, use eraser to clean the chips softly and use tissue paper to clean the metal touch pot softly(can't finger touch), and then re-install the print head; Or ?You can use a knife to tear off the remanufactured print head chip, and then use the double-side tape to paste the original chip. 3. My printer hasn't printed for a long time, now the printer report shows that the print head has a problem, how do we do? LKB Answer: ? Your printer at least needs to print 1~2 pages twice a week. ? Because haven't printed for a long time, the ink in the print head is a little dry, soak the print head nozzle into hot water with around 75°degree almost 2 hours or half day, and then use tissue paper to touch the nozzle and absorb the ink. Note: 1. Our print head is remanufactured, not original one, Non OEM value-save more for you; 2. Please shake the print head before installation, it will avoid bubble problem. 3. When you replace the print head, please do Printer Head Cleaning 2~3 times every time. See more? Compatible printers: HP Officejet Pro: 8000 - A809a , 8000 Enterprise - A811a , 8000 Wireless - A809n 8500A - A910a , 8500A Plus - A910g , 8500A Premium - A910n. ? After sales: 7*24H online service. our defect rate is very low due to 2 times testing before shipping. However, If any defect, we make sure below within 3 month very honestly: 1) send good and new one to you as replacement, it is free; 2) Refund the payment to you fully. ? Technology support: We have factory in China. Our technology team leader has been worked printing consumable area around 20 years. If you meet any operation or installation problem, just contact us. We can support and help you very strongly. ? Quality: the latest update new chip, chip is never used, which can be recognized by printer very well. So the quality is higher than recycled print heads. 2 times testing: ? 100% function testing after finish production; 100% function testing before shipping. You will be 100% satisfied with our products. Just buy it with confidence today. ? Package: 1xblack/yellow,1xcyan/magenta (2pcs, BY / MC). The print heads is packed with PE plastic bag, which avoid damage or ink leak. The inner box with LKB Logo is very beautiful and individual. Around 9~10g dye ink in the print head.
