BM5070 schematic as a 2.45 MB PDF, with the name giving only this code and no brand, model or revision. Treat BM5070 as a board or project identifier and compare it with the silkscreen on the PCB before trusting the drawings. Open it in a PDF viewer to read power and signal nets, find regulators and their enable lines, and check connector pinouts when hunting a short or a missing voltage. A second identical-size copy under the same name may exist in the index.
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 @vinafix_bios. 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.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)