Touchscreen section of the Samsung Galaxy A30s (SM-A30S) service schematic, delivered as a 4.30 MB PDF. It covers the touch panel circuitry, typically the connector, supply lines and the interface to the processor. Use it when the digitizer does not respond, to trace the touch signals from the display connector, check supply voltages and find filter components or resistors to measure. Readable in any PDF viewer; confirm the board revision of the phone against the drawing 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.