Samsung SM-G955F schematic, a 4.88 MB PDF document. The file name gives the model code only, with no board revision. Such diagrams help repair technicians trace power rails from the battery connector and PMIC, follow wireless and wired charging paths, check display, camera and sensor connector pins and pin down which capacitor or IC is behind a short. Open it in any PDF reader and search by designator or net name. Make sure the main board in front of you matches this model and variant before replacing components.
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 @tamirat_moobile. 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.