YamahaYDP140 Broken Jack Plug

I have a Ydp 140 with a broken headphone Jack plug in the headphone socket.
What is the best way to access the jack plug socket to remove it please?

with that style, its usually remove the back cover and pull the keyboard out that way.
there’s always hidden screws.

Managed to remove the broken end of the jack plug with a fine medical mosquito forcep, without needing to access it internally.