SOPS
Impressive? True! but the reason it ain't in the books is Boeing have decided you don't need to know and just follow the QRH when the lights come on.
If you look at the info in the new A5 AOM's compared to the older A4 versions, there is a wealth of data removed. It's easy to get too complicated and bogged down in gobbledy gook, (remember we became pilots not engineers) but removing the flow diagrams of many of the systems was a retrograde step.
I'll not be surprised if you come up with a lot more similar questions; be it from curiosity or first hand experience.
Boeing are going down the 1 pilot and a dog route.
Problem is when something happens that is not supposed to and has not been covered in the QRH. I guess they reason that if it troubles you and you can't find a solution, LAND. However, there is a world outside the USA and sometimes that is not an option.