Schematic PDF of 2.88 MB named only j701, which gives no brand, model or board revision. The token may be a board or project code, but that cannot be confirmed from the name alone, so open the document and read its title blocks to identify the device before use. Once matched, a schematic serves for tracing supply rails, locating test points and finding the part behind a short or missing voltage. Verify the board number printed on the PCB matches the drawing before taking measurements on its basis.
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.