Sony VAIO service archive for motherboard MBX-152, project code MS32, in a 1.62 MB ZIP file. Sony numbers its laptop boards as MBX-xxx, while the actual design comes from an ODM, and the project code here points to the board family. The name does not state whether the archive holds a schematic, a boardview or a BIOS dump, so check the contents after extraction. Repair technicians use such material for tracing power rails, locating test points or reflashing firmware; the MBX number on the PCB must match before relying on it.
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 @schematicslaptop. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.