This seems like quite a shitty design. I would never buy an HP but I grabbed one off a curb that someone dumped just for the ADF scanner.

It gave a missing print head error. Youtube/invidious videos yEOqnrzwHF4, XvN_i50KShA, g6ySDBW1HRs, 7H2bA8b8XHc and xbM_Eat0VmI show attempts to fix this garbage. Ink leaks can reach the spring and block the connection. The springs contact an unreachable area where disassembly is not possible because they used glue. The UI is vague; does not say which color or contact is broken. I repeated the fix procedure 5 or so times and even sanded the spring ends and it still does not work.

Lucky the scanner still works. But worth noting some HP printer models refuse to allow the scanner to function if there is an issue with the ink, which is an asshole design IMO.

Note that if I were to get it working, I would not buy HP ink. I would perhaps experiment with making homemade ink from spent coffee and tea leaves.