Main board schematic for the Redmi K40 Pro smartphone, an 858 KB PDF. Phone schematics show the PMIC, charging circuit, battery connector, display and camera lines and RF sections, letting a technician trace a power rail, follow a dead signal or find what shorts a line to ground. Open it in a PDF viewer with search to jump to net names. Use it together with the matching location map, and confirm the board version on the device before relying on part 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 @schematic_mobile5. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.