Circuit diagram set for the MSI MS-7509 mainboard, revision 1.0, provided as a 2.4 MB PDF. The MS-7xxx code is the MSI board identifier and appears on the PCB with its revision. Use the schematic to trace CPU core and memory power, check the standby circuitry when a board will not power on, locate the BIOS flash, and identify components on a shorted rail. It opens in any PDF viewer. Make sure the board revision matches, since the 0A version of this design was drawn separately.
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 @pepeelectronica. 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.