RAR archive for the Lenovo IdeaPad Z360 notebook; the name gives no board number, revision or content type. Unpack it with WinRAR or 7-Zip to see whether it contains a schematic, boardview or firmware. Such repair documentation is used to follow power rails, check the power-on sequence, locate components and track down shorted nets. Because the archive does not identify a mainboard number, compare any board code found inside with the one silk-screened on your PCB before relying on component locations or values.
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 .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.