RAR archive labelled only for the Lenovo E50, about 1.43 MB in size. The name gives no board number, revision or document type, so open the archive to see whether it holds a schematic, a boardview or firmware. Repair files for a desktop or laptop of this line are used to follow power circuits, locate components and work out why a board will not start. Check the model and the board markings on your unit against the contents before using it, as the E50 name covers more than one design.
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.