Boardview archive for a Lenovo notebook mainboard built by LCFC, board number NM-E541, with the project codes JS471 and JS573 listed in the name. No revision is stated, so compare the silkscreen on the PCB with the board number before trusting pin data. LCFC is the Lenovo-owned ODM that uses the NM-xxxx numbering pattern. Unpack the RAR and open the layout in a viewer such as OpenBoardView, FlexBV or Boardviewer to find components, test points and nets while tracing a short or a missing power rail.
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 @BoardSchematic. 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.