An old Kawai digital piano (Earlsfield)

Hi, it's over 15 years old digital piano. Still works but not as good as a couple of key sometimes sticks down. The pedal suddenly stopped working last week. If anyone with skill may be able to fix it and use it. I believe there should be at least two people to carry it down from 1st floor. It can be dismentled but I don't know how to....(A pianist said it can be taken apart) It's a piano not keyboard...
No time waster please.

       
Approximate Location         Show marker