See if these guides/videos are any help:
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Kodak Hero 7.1 Printer Software Mac
This one is for a slightly different model, but a comment below from someone with your version found it helped him to remove the print head.
This one seems to generic re' Kodak but may be of help?
Kodak Hero 7.1 Printer Driver
Kodak Hero 7.1 Windows 10
If you've never disassembled typical all in one unit... be very aware that they are true PIA. I partially stripped down a long serving Canon MP600r, which had finally generated a pretty well death knell error code; after about 10yrs or so of trouble free use. There came a point where it was clearly not really designed to be taken apart - unless you were fully factory trained. The internal connections were extremely fragile, tangled and easily disconnected - leaving you wondering where they belonged. I gave up - and I don't quite easily. The likely-hood of a successful repair was low to start with - and a chat with a Canon tech confirmed that likely the printer had reached the end of the road; and also they seldom actually fully serviced/repaired them. Invariably they were simply replaced (if under warranty) or else you got another unit returned to you - for a reasonable repair fee - not knowing that it was likely a new one, or one that had had only a minor repair event...