Version 1.0 schematic for the MS-7390 mainboard, stored as a 1.15 MB PDF document. The MS-7 prefix follows MSI's desktop board numbering, so the board version is normally printed near the model number on the PCB. These sheets help when you diagnose no-power or no-boot faults, measure rails against expected values, and locate the parts that generate each voltage. Open the file in any PDF reader and search it by net name. Confirm that your board is revision 1.0, because the 0A edition differs.
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.