PDF schematic for the ThinkPad T42 laptop, about 1.08 MB in size. No board revision or code name appears in the name, so check the system board label before matching components one to one. The drawing helps with tracing the main power rails from the charger input through the regulators, checking where a short to ground could originate, and identifying test points for the chipset and memory supplies. A standard PDF viewer is enough to open and search 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 @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.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)