It’s not the original manual but it could be helpful. Roland used to have the original manual for download, but I just checked and it’s gone. Maybe if you write to them directly then can send it to you.
Two months ago I found a dr55 on ebay for a cheap price (70 euros port compris, tout est relatif de nos jours), I send the cheque… but the seller send it back to me, saying the machine was broken… :cry: