There's a trick to it, I forget what exactly.
First, you don't need to do anything to the bottom two panels (engines and life support valves etc)
This is all on the topmost panel. Make sure the EPU is on and then turn all the main breakers off except life support,
then turn off the generators and APU. I think you need to do it in that order.
As an aside, I ran into an unexpected problem - even when in safe docked mode with the crew having disembarked
from the DG, I still run into "excess G" warnings (even though the only thing on in the DG is the life support).
Odd... At least the crew isn't there to get pancaked
![:)](http://orbiter.dansteph.com/forum/Smileys/orbitersmiley/smilie5.gif)