The picture shows the inside mechanism of the pop-up flash. You can access it taking out the cover of the flash. This simple switch tells the camera if the pop-up flash is in or out. Normally the part called "operator" moves inside the "switch" and opens and closes it. What I did was, using small pliers, to modify the curve of the "switch" part so that the switch is operated at half extension of the pop-up flash instead of full extension.
I cant understand the diagram. How does it relate to the pop up flash. What do you have to do to get to the switch to aler it.