PDF schematic of 3.34 MB for model SM-J730FM, a Samsung model code, though the name itself states no board revision. Repair technicians use such drawings to trace supply rails from the PMIC, check charging, battery and USB paths, and find which capacitors or protection parts hang on a shorted net. A normal PDF reader is enough to view it. The FM suffix denotes a specific regional variant, so check the device label and PCB markings match before relying on part values or layout.
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 @schematic_mobiles. 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.