Lenovo boardview for LCFC board NM-D481, project codes HE430 and HE530, revision 1.0 as written REV10 in the name. LCFC is Lenovo's own manufacturing arm and uses NM-prefixed board numbers that are printed on the PCB. It comes as a 1.71 MB RAR archive. Open it in OpenBoardView, FlexBV or a similar viewer to locate components, trace nets and power rails, and find test points while diagnosing shorts or missing voltages. Check the board number and revision match first.
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.