HP C4812AE print head

looking at the designjet 500 how to go about changing the printheads so when the front menu we do go into the Inca menu and press Enter scroll down till you see replace printheads press Enter okay designed you tells you to open window oh yeah release the lever we see we want to enhance their take out the print ends if you want to be placed have a quick check of the carriage make sure it's clean if it's not use one of these haven't got one of these then you can just use and then tweak off a little bit of water on it and damp and just give those clean check the printer itself hasn't got ink over there this one's quite clean so that's fine see the premed latch it shut it up shut its own cover now what the designjet will do you'll go through and it'll actually print an alignment page just to make sure that we nerds working correctly so after replacing the print heads the designjet produces