How do I get into the keys of my Clavinova 409 - they're sticking

Firstly take a look at the keys that are sticking. Are they leaning slightly to the left? The gap on either side should be equal, you should be able to slide a business card freely into the gap.

If they are leaning to one side it is a sure bet that the key has broken on the fixing under the bank of switches.

You will need to dismantle the keyboard and remove the broken key ( and the bit that has probably broken off ) and replace it.

Replacement keys can be found at www.beckettsmusic.co.uk if required. If you need further assistance contact via the links on the site.