Hi Robert
Pioneer service all Exclusive products themselves. Part of their policy when they introduced the top of range brand in Japan was to provide lifetime servicing - you pay for it now obviously, but it was quite reasonable cost.
The tonearm is generally what required most/all of the servicing, mainly due to the damping fluid sometimes getting into the arm due to not filling or emptying the damping cup correctly. Touch wood, most else is bulletproof.
I had mine serviced by Pioneer before it was shipped to Australia, however I had a friend who was living in Japan at the time that picked up the table and drove it to Pioneer for the service before shipping it to me.
I am not sure if your seller in Japan can and is willing to do that. If you buy from a shop like hifido, they will do that for you I believe.
good luck and let us know if/ when you get it.