Xiaomi Redmi K30 4G smartphone schematic in PDF form, about 1011 KB in size. The 4G variant is distinct from the 5G edition, which has its own separate diagram, so make sure you are working on the right model. The document lets a repair technician follow the charging circuit, PMIC rails, USB and display connector lines, and RF sections, helping isolate a short, a dead power rail or a failed backlight. Any PDF reader with text search can be used to find net names and component references.
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 @mischematic. 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.