Original New For HP 934 935 Print head for HP Officejet Pro 6230 6830 6975 6962 Feature: Original brand new. Excellent performance and high quality. Made of high-quality material, durable, firm and stable for us to use. This is a tested and sealed Printhead. Good stability, long lifespan. Specification: Type:Print Head Condition:Original brand new Applicable Model:For HP934/935,for Officejet Pro 6830/6230/6835/6815/6812/6975/6962 Packing includes: 1 x Print Head Note: 1.In print entered please turn off the power of the printer, or it will cause the mainboard chip burned. After loading the print head, please don't install ribbon overhead 10 pieces of A4 document,so that make the new needle have a running-in process, and then put the ribbon. I hope you can be careful operation. 2.If the original print head was broken and especially leaked ink, the mainboard has burned possibly,so please troubleshoot the problem of the mainboard before replacing the print head. 3.Print head requires lots of attention, It is easy to cause man-made damage if a non-professionals replace printhead blindly. There is a regulation that printhead is not warranty, and it is delicate and expensive. please do not make commissioning on the machine, and please treat it with caution. 4.If you are not familiar with the machine, it is recommended that you had better send the print head to a repair station or find professionals to replace the nozzle, so as to avoid unnecessary losses and unnecessary trouble.