Vintage Synth Repair

Hi, can anyone advise on replacing F switches on a Roland XP60, these are the ones on the front just below the screen.


I'm not looking for detailed instructions but I can see that 3 of them will need replacing and it looks like a pig of a job to get in there!, do I really have to take out / disconnect just about every panel or am I missing the obvious?


If you've done this can you advise likely time it takes?


Thanks


Wayne