Archive for the Sony VAIO VGN-C22CH notebook, tagged MS60 MB, which most likely refers to the motherboard project code used by the board maker. It is 860 KB and probably contains a schematic PDF, although the name does not state the document type. Sony numbered its main boards with MBX codes, and other files for this model mention MBX-159 and MBX-163. Read the MBX label on your board to confirm a match. Then use the diagrams to follow power rails, locate components and check suspected shorts.
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 @generalschematics. 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.