Touch screen section of the Samsung SM-A20S schematic, a 4.59 MB PDF document. The pages focus on the touch panel connector, its supply and communication lines and the protection parts around them. Useful when a replaced display still gives no touch response, when lines need checking for shorts to ground, or when a damaged connector pad must be bridged correctly. Any PDF reader opens it; measure against the actual board and verify the model number on the device label before relying on pin assignments.
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.