Accuphase DP-560

imhififan, would you please tell me what kind of jumper wire I should use?

@foolishman,
Can you provide picture of DP-560 power board?

@imhififan ,
Here are pictures of DP-560 power board:

https://onedrive.live.com/?cid=6E164E2EDFDD40F6&id=6E164E2EDFDD40F6%2167224&parId=6E164E2EDFDD40F6%21120&o=OneUp

https://onedrive.live.com/?cid=6E164E2EDFDD40F6&id=6E164E2EDFDD40F6%2167225&parId=6E164E2EDFDD40F6%21120&o=OneUp

Also, I will appreciate very much if you would tell me how to solder a jumper wire. Do I need to pierce on the board before soldering a jumper wire? In this case, I want to change to 220-240v.

In this case, I want to change to 220-240v.

J1 = 100v
J2 = 120v
J3 = 220-240v 
So if you want to change input voltage to 120V, just simply move the jumper wire to J2 or move it to J3 for 220V-240V.
I didn’t see any standby transformer or J4 and J5 on the pictures, please make sure there isn’t a standby transformer hiding somewhere, otherwise the transformer will be fried when power up with 220/240V mains voltage!

if you would tell me how to solder a jumper wire. Do I need to pierce on the board before soldering a jumper wire?

Accuphase gears are expensive (to me at least), if you need to ask this question, no offense, I suggest you find someone with electronic and soldering skill to do the conversion for you.

@imhififan ,
After I confirmed there weren't any standby transformers, I was able to change voltage to 220-240v sucessfully. Actually, as you suggested, a person who has electronic and soldering skill did convert voltage. Thank you very much again.