Service schematic for the Xiaomi Redmi Note 8, the model coded ginkgo, delivered as a 1.66 MB ZIP archive. Filed under firmware, it actually holds the phone's circuit diagrams. Repair work it supports includes following battery and charging circuits, checking voltage rails from the power management IC, and locating connectors and filters on audio, display and RF paths. Unzip it and open the pages in a PDF viewer, and match the PCB revision printed on the board with the document so component numbering lines up.
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.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →