That pic looks right, but before you publish it replace the transistors on your board and compare it to the stenciled diagram on the circuit board that are under the transistors. Or if you can see the stenciling without removing the transistors, compare all transistors to the diagram.
Want to be sure the diagram matches what's printed on the board and how the transistors are mounted since I don't have a SX-990 to see if the transistors are placed as shown in the service manual diagram and the way I drew it up.
Changes are made all the time without the revisions being addressed in the service manuals.
