Power key and volume button schematic for the Samsung Galaxy SM-A23, delivered as a 2.73 MB PDF. The sheet traces the side key lines from the flex or board contacts through protection parts to the PMIC and processor inputs. It is useful when a handset will not power on from the button, volume keys are stuck, or a key line shows a short to ground. Compare readings against a known-good board where possible, and confirm your SM-A23 variant matches the documented layout before replacing parts.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @phoneSchematics. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.