RAR archive for a Sony laptop on the Quanta RJ6 platform, revision 1A, around 1.60 MB in size. The name gives no VAIO model number, only the Quanta project code, which appears printed on the motherboard along with its revision. The contents are probably the schematic, used to trace power rails, locate MOSFETs, fuses and test points and track down the source of a short or missing voltage. Extract it with 7-Zip or WinRAR, and check that RJ6 and revision 1A on the PCB match the document before trusting values.
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.