Schematic in PDF form for the ASUS X553MA notebook mainboard. The RG suffix in the name is not explained, and no board revision is stated. Any PDF reader opens it, and the text search is useful for jumping to a net name, connector or reference designator. Repair work typically involves following the power sequence, checking standby rails, locating the charger and VRM circuitry and confirming pin assignments before measuring. Compare the board marking on the actual PCB with the sheet title block so you know the drawing matches the board on your bench.
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 @alischematics. 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.