Large 280 MB archive gathering schematics for Xiaomi devices. The name does not list which models are included, so open the archive to see its contents. Phone schematics show the power management IC, charging path, battery connector, display and camera interfaces and the test points around them, which a technician uses to trace faults like no power, no charge or no display. Files of this kind are usually PDF and open in an ordinary reader. Always match the exact model and board version to the device on the bench.
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 @laptexdna. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.