Thanks for the response.
These printers are €50 or so to buy. It would cost me this much in shipping/packaging etc. to deal with a warranty service.
The key question I have is how to approach the removal of the outer case of the printer. I think I made this clear in my question. It does not appear that you know the answer to this.
Perhaps there is a service manual for the printer somewhere. Or perhaps someone can outline the first steps.
On this basis then I don't feel the right answer was given. Would you agree?