Can I dismantle and reassemble my 3 seater sofa?

I have a large 3 seat sofa in my living room. I purchased it before I changed my front door. I don't think that the sofa will now fit through the front door. (The new door has a larger frame than the old one did and I remember that the sofa was a tight squeeze even with the old front door.)

Is it likely that I can dismantle the frame inside in some way to make the unit slightly smaller so that it will fit out the front door? I would be looking for a solution which caused minimal damage to the sofa and enabled me to still use it after I had put it back together.

(The sofa was a good one from DFS for those who know DFS.)