Power and volume key schematic for the Samsung SM-A22 5G, provided as a 5.25 MB PDF. It traces the side button lines from their contacts through protection components to the PMIC and processor inputs. Technicians use it when the phone will not turn on from the key, the volume buttons do not respond, or a key line is shorted, which can cause boot loops. Open with any PDF viewer and verify the handset is the 5G model of the A22 before measuring against the drawing.
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.