My 3 yo stuffed some picture books in the gap around the keyboard cover. Managed to fish most of them out but at least one fell flat and is no longer visible.

I've emailed Yamaha support, but expect to be told to "call a service center". Does anyone know if I can safely remove the back from the keyboard to access the inside? It has a large number of screws on the backside but don't really want to try randomly remove them.