Schematic diagram set for the IBM ThinkPad X61 ultraportable, 1.42 MB in PDF format. The name contains only the model, so the board number and revision are not indicated. A second X61 file of identical size is also listed and is probably a duplicate. Use the schematic to identify regulators for each rail, check enable and power-good signals and work out which component loads a shorted net. Any PDF reader is sufficient. Compare the board silkscreen to the drawing before relying on component values.
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.