Kqiang Best Print Head 688 CN688A 364 for HP 3070 3520 5525 4620 5520 5510 in USA

replacing the printer head and an hp photosmart 5520 printer scanner copier now the printer head in case you don't know that's this piece where your ink cartridges snap into and the reason i'm installing a new printer head is because i broke the old printer head when i was trying to take it out to clean it and the reason i was taking that printer head out to clean it is because even with a brand new black ink cartridge no black ink was making it through the printer head to the paper so here's how to take it out how to clean it and how to replace it there are nine screws that you have to take out so that you can remove this top cover i have a piece of orange duct tape on top of each one of them this one in the front right corner is underneath this tag so you have to peel this off these two in the front are behind the control panel to get to the ones in the back you have to disconnect thi