Documentation for the FIC MR053 board, revision 0.1, in a 1.03 MB RAR archive. FIC was a Taiwanese contract manufacturer whose laptop boards appeared under various brands, so identify the board by the MR code printed on the PCB. Revision 0.1 points to a very early design, so component values or placement may differ from shipped units. The archive most likely holds a schematic for tracing supply rails, power sequencing and signal paths. Check the revision on the board and extract with any RAR tool.
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 @IT_SERVICE_WORLD. 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.