Compact 525 KB RAR for a Sony VAIO identified only as SY3. The name gives no board number, revision or document type, so check the contents before relying on them. The archive may contain a schematic, a boardview or a firmware image. Look for the Sony MBX number and any ODM project code on the actual motherboard, then match them against the files inside. Mismatched documents can lead to wrong measurements or wrongly placed parts.
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.
7-ZipWinRARThe Unarchiver (macOS)