Accuphase E-480


Does anyone know how to convert voltage of Accuphase E-480 from 100v to 110-120v? Here's a picture of the power selection board for Accuphase E-480.

https://onedrive.live.com/?cid=6E164E2EDFDD40F6&id=6E164E2EDFDD40F6%2170585&parId=6E164E2EDFDD40F6%21120&o=OneUp

E-480 isn't like E-650 and E-800. E480 has jumpers of J1, J2, J3, J4, J5 and J6 instead.

foolishman
I believe the trim pot is for bias adjustment and the +/- test point should has a reading of 4mV...
Correction:

I believe the trim pot is for bias adjustment and the +/- test point should has a reading of mV, perhaps you should measure and recorded it for future reference.
Post removed 

@foolishman 

Really appreciated that your share these info with us here, I have E480 now, and looking forward to do the voltage conversion 

just wanna confirm that change its 100v for 120v, I only need change below jumper setting 

J4 -> J5

J10 -> J8

J6 -> J11

Thanks!

@foolishman for these jumper on E480, does it require solder, or it can be just pull out wire, and push it in to other jump position?