IBM ThinkPad A30 circuit schematic, supplied as a PDF of 986 KB. The name states the model only, with no board number, revision or configuration. For repair work, the diagram shows where each supply rail originates, how the startup sequence is controlled and which parts connect to a given net, which is exactly what you need when chasing a short or a missing voltage. It opens in standard PDF software. Verify the board markings against the document before relying on component values or reference designators.
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.