How do I change the tubes in a Luxman LV-105u?

Hello all. I just bought a beautiful Luxman LV-105u integrated amp. I haven't received it yet but I'm wondering if anyone knows how to access the two tubes in the pre-amp section in order to change them. I have heard something about a latch that releases a door for access, but no details were given. Also, does anyone know where I can obtain a copy of the owner's manual for this amp? Thanks in advance for your help.
Read this thread (with photos).

Good luck.
Hi Dekay. Thanks for the link. I don't really understand the proceedure though. I need more step-by-step information than is provided there. I'm not technically savvy and some other posters seem to be contradicting the main post.