Xiaomi Mi 9 schematic, supplied as a 1.15 MB zip archive. Only the model is given; no board number or hardware revision is stated, so confirm the version from the pages inside. A technician uses this kind of drawing to follow supply rails, trace charging and USB-C signals, and identify the components around the display, camera and in-screen fingerprint connectors. It helps narrow down which parts to lift when a rail shows a short. Check the PCB markings against the schematic before measuring.
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.