RAR archive of 122 KB for Wistron board number 06245-1, with no laptop brand, model or content type stated in the name. Its size suggests a boardview rather than a full schematic PDF, though it should be extracted and checked. Boardview data lets a technician locate components and test points and follow nets when hunting shorts or missing power rails, using viewers such as OpenBoardView or FlexBV. Match the board number and revision silkscreened on the motherboard with 06245-1 before relying on any placement or net information.
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 @cyberlanelectonik. 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.