I am sure I am not the best person to reply but I'll have a go.
1)
On the A330
Engine fire Test pb
This pb permits the crew to test simultaneously the operation of the fire detection and extinguishing system for both engines.
When it is pressed;
a continuous repetitive chime sounds
the master warn lights flash
eng fire warning appears on ECAM
On the fire panel
the eng fir epb comes on red
the squib lights come on white if discharge supplies are available
the discharge lights come on amber
on the the eng panel ( pedestal)
the fire lights come on red
Simply push and hold the button for as long as it takes to satisfy yourself that all the above criteria are met.
2)
I don't think the MCDU calculates actual winds 200 nm ahead. Put winds in at significant points from your forecast at various levels. Put enough in horizontally and vertically to give an accurate wind field. If you are transatlantic you need them every waypoint . The machine will use the actual wind at present position and use the forecast wind at next waypoint for predictions.
3) The prog page should always accept a cruise FL.
Hope I haven't misled you too much - it is all much clearer in practice.