Schematic in PDF form for a design labelled T76J, 4.23 MB, larger than many in this set and possibly more detailed. The name gives no brand, board number or revision, so confirm the match from the title block inside. A full laptop schematic shows the power path, regulators, charger and embedded controller, and how the chipset connects to peripherals. That makes it the main reference for measuring rails and tracing signals. Check the board markings before relying on 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 @cyberlanelectonik. 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.