Ok thanks for all the replies.
System reset wasn't part of my question because there is a list of resets in the QRH so I never wondered about those.
So if APU shouldn't even be considered before reading STS, what is left? Eng. relight? nothing else?
I was thinking about balancing Fuel if a Fuel imbalance was noted as part of the Eng. relight ECAM.
But to be honest, I'm not sure I would do it before reading STS. I am just trying to find examples of "additional proc's" one would do BEFORE reading STS. And outside of eng. relight, I cant find anything.
If there is only one applicable procedure, why the use of "any" the FCTM? ("any applicable procedure")
Thanks again for the discussion.