Sony VAIO material for the Z50CR mainboard, marked S1202-2, in a 20.3 MB zip. Sony boards use MB codes with revision tags, and the code printed on the PCB should match before you trust these files. Unpack to find out whether you have schematics, a boardview or firmware. Schematics let you trace power rails and signals around the charger and system power circuits, while any flash image needs a backup of the original chip and a size check against the SPI part before programming.
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 @azvoltagemap. Enginerys does not host this file.
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Compressed archive that every operating system opens without extra software.
Built-in OS tools7-Zip