Yamaha CS80

Merry Christmas everyone...

I just uploaded a photo in the *Miscellaneous* folder of my drummer, 
Steve, testing the A/T on my recently repaired CS80 in my basement 
workshop.

The only thing left to do on this one is to change one of the preset 
button bulbs. Can anyone tell me how these dismantle please?

Do I need to drop the whole assembly from the front panel or do the 
buttons pop off..?

Hope you all have a great one..
Cheers,
TOM