A schematic diagram for Samsung hardware. Shared as “A7-2018 (SM-A750F)_REV0.3.pdf” — a .pdf file, 272 KB.
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 @uzb4422. 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.