Is your 701 LED or an older CCFL backlit model?
Before anyone jumps down my throat for not searching, I have searched...many times. I have no problem accessing the hidden menus of my 629 and my 869 by pressing 588998 and then hitting the menu physical menu button, but that just doesn't work for my 701. I have tried about 30 times now. On my 629 and 869, immediately after pressing the code, I am prompted with a language menu and from there I can access the rest, but I don't even get that on the 701.