ASUS schematic covering the K40IJ and K50IJ notebooks, which share one mainboard design, at revision 2.0. The PDF, 2.68 MB, details the power supply stages, chipset, memory and peripheral circuits. Technicians rely on it to trace a shorted rail back to its source, follow the power-on sequence and confirm component values during board-level repair. A second file with the same title also exists in the index. Confirm the revision printed on your PCB is 2.0 before trusting part references.
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.
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The same file was posted more than once. If one link is dead, try the next.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.