Schematic for the Xiaomi Mi 8 Lite, compressed into a 2.56 MB zip archive. The name carries no board number or revision, so take those from the drawing title blocks after unpacking. Technicians open such schematics in a PDF viewer to trace supply rails, follow the charging IC and USB lines, and check signals to the display, camera and fingerprint connectors. They are also used to work out which parts to test when hunting a short on a main rail. Confirm that the board marking matches 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 @esquematicosparatodos. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.