Is it possible to upgrade the ram for pa700?

[shqip]

Maybe a stupid question,

But, has anyone seen the insides of a pa700/1000? Is the RAM on these keyboards replaceable hardware or is it part of the main circuits?

I'm wondering if these machines have the same OS and pretty much similar hardware specs besides RAM, would it be possible take the rRAM from a pa1000 and put it in a pa700? Or possibly just upgrade the ram in the future for these keyboards?

Thanks!