Try the Roland US website, they recently had downloadable pdf manuals for most of their Roland and Boss instruments. I know I downloaded the manual for my DR 670 in the last few months.
Okay, I got it figured out now~go to this link http://www.rolandus.com/mojo/manuals.aspx
It will ask you to register an email address and establish a password-after that a verify page will come up, click on it and you will be told to click on a link thats sends you to your email address, where you click on another verification link. Then it will take you back to Roland-sign in and put in password then click on download link. I downloaded the whole 140 page manual in PDF form, it just is a little complicated is all!
Tony
Oh man I knew it was there, just had to jump through a few hoops to find it was all...hey I downloaded manuals for all my Boss pedals while I was there too!