Disklavier

Hello,

Just joined and I am thing of purchasing a used Disklavier Mark IV piano. I can't find a Disklavier tech that will travel to this area and evaluate the system. However, I have found a regular piano tech to inspect the piano itself - which is also important.

Is there any way to run diagnostics myself to see if the Disklavier portion is working properly? Although the piano/disklavier is still under warranty and the seller is not aware of any issues, since the warranty isn't transferrable, I would like to do the best I can evaluating it prior to purchase.

Is there anyway I can test the electronic portion of the piano or can Yamaha test remotely via the internet? I was told that the piano does have some diagnostics into it. Thanks for any advice!