Schematic for the Gigabyte GA-F2A78M-D3H, board revision 4.01, in PDF form. The model uses the AMD A78 chipset on socket FM2+. A full circuit diagram like this lets a technician follow the CPU and memory VRM, standby rails and power-on logic, and identify what feeds a shorted rail. Any PDF reader opens it, and text search helps locate net names. Gigabyte layouts change between revisions, so confirm the PCB shows rev 4.01 before using values or part locations from it.
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 @vinafix_bios. 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.