Roland System 100m

Hello
I just bought a system consisting of a 191J cabinet, 112, 121, 130 140 
and 150 modules and a 184 keyboard. Problem is I have no idea how to 
set it up. I have assembled it and powered it up, that was no problem. 
I then set up a patch that is in the patch book which came with the 
system just to test it out. But when I connected it to my amp there 
was no sound at all. I'm obviously (I hope) doing something wrong in 
the setup process but I can't figure out what. I connected my amp to 
jack sockets 1, 2 and 3 but still no sound. Am I missing some 
fundamental point here? Do I connect an output from the VCA to the 
main patch bay/jack section? I'm completely new to these systems but 
have been dreaming of having one for years, any help or advice would 
be greatly appreciated. I guess I'm missing something very obvious 
that anyone else would notice immediately but please be kind, it's my 
first time with one of these systems!! Could somebody point me in the 
direction of a website where I might find some newbie info, I have 
already searched extensively. Thanks

Ryan