Accuphase voltage conversion

pip-

consult Accuphase for the proper info on this matter.
Keep me posted & Happy Listening!

Bear in mind that local Accuphase distributor won’t be very happy knowing that you have Japanese unit. By their terms it’s "Unauthorized" and they will simply refuse to provide service.
Contact Japanese service provider preferably via Japanese website.
Tell you’ve moved to USA using Japanese and not English.
The other simpler way is to wire 240V dedicated line out of the distribution box. Thus no internal mods needed.

Thanks for all the replies.  From what I have read on other forums, the Accuphase transformer is multi-tap (therefore multi voltage), so in theory, all one should have to do is rearrange the transformer wires.  All I require is a photo, or a schematic of someone who has a 120v version.  

When I purchased this unit, I knew that being from the gray market, I would not have access to service or assistance from Accuphase.    I don't mind using a step down transformer, but I am curious how to convert this unit internally.    

There are certain logical ways to examine which unused taps should replace ones already currently connected. 
Often on PCB you can spot the input AC voltage printed than measure voltage accross the unused taps so it's the desirable one to be connected.
For safety I'd disconnect power transformer and run tests with 220V than run tests with 110V so to find matching unused taps. The color code on output taps of power transformer can often give you some tips, but to be sure measurements can give you precise picture of your project.