Pegatron document in PDF form naming BA50, P453 and BA52HR CR at revision 1.0, also tagged BDV, although it is catalogued as a schematic. The 2.28 MB file can be used to follow power circuits and signal paths and to identify components when diagnosing a dead or unstable board. Since no retail brand is given, rely on the board codes on the PCB to confirm compatibility. Pegatron supplies boards to several notebook brands. Check the revision marking before trusting values, and open it with any standard 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 @afsschematicfree. 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.