Mainboard schematic for the ASUS F9J, 1.81 MB in PDF. No revision or board number is included in the name, so verify the version against the title block and the PCB silkscreen. Such drawings support no-power and no-boot diagnosis: tracing standby and main rails, confirming the power-up sequence, finding test points, and locating the components on a shorted net. They also show where graphics, memory and I/O circuitry connect. Any PDF viewer opens the file, and text search helps locate nets quickly.
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 @schematicslaptop. 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.