Disklavier

Hi all,

I am new to the group and this is my first post. I have a pretty 
high level of technical skill when it comes to piano action work, 
tuning and voicing, but I am new to Disklaviers.

I have a 1990 C-3 Wagon grand from japan that I picked up very 
inexpensively and after having done a little regulation work (very 
minor did'nt need much even though its 17 years old! Go Yamaha!) and 
some voicing (was a bit bright, now sounds like a mason and 
hamlin) , I would like to run the automatic calibration on the 
disklavier unit as I am sure it hasnt been done in a long time.

What is the sequence to get the unit to "boot" in to maintenance 
mode?

The menus are in Kanji, but I have a close family friend that is 
japanese to translate so I should be able to get through it.

Any help would be appreciated.

Thanks,

-C