Schematic PDF for the Bitland BM5688 board, a design from the ODM Bitland, which builds laptops and tablets for various brands. The 890 KB document gives the circuit diagram used to follow power rails, check the charging and power-on circuits, and identify components around a fault. The name does not state the end-product brand or the revision, so compare the board marking with the schematic title block before relying on net names or part values. It opens in any PDF reader.
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 @cynetitsolution. 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.