Compressed ZIP archive of 507 KB for the Xiaomi Mi 1S smartphone. The name gives only the model, so the exact contents, whether a circuit diagram, a board layout or service pages, are only known after unpacking it. For an early Xiaomi handset this kind of material is mainly used to follow power and charging paths, find the connectors and test points and locate a failed component. Check the PCB revision printed on the board against the document, since manufacturers often changed parts between production batches.
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 @esquematicosparatodos. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.