PDF schematic for board MS-G019 at revision 2.1. The name gives no brand or device model; the MS- prefix resembles MSI codes, but that is not confirmed by the input. Use the document to trace supply rails, identify regulators and connectors and follow signals around the main controller. A revision 1.0 version of the same board also exists, so check the revision printed on the PCB and use the matching file, as part values and placement may have changed between them. 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 @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.