Yeah, tracking down manuals for older products can be hard! It’d be nice if the manufacturers kept an archive for them but not all of them do, sadly. For my turntable, I had to grab it from a third-party site even though Thorens is still going strong.
Looks pretty straightforward: just a matter of popping open the compartment and slotting it in. 🙂 Sometimes, things can get a bit more complicated than that 😛