Schematic covering the L645 and L650 notebook models, a 1005 KB PDF. The name holds no brand, board number, ODM or revision, so confirm the target from the title block and compare with the code silkscreened on the motherboard, since a model family can use more than one board. With the document a technician can trace the charger and regulator circuits, follow standby and main rails, check enable and power-good lines and find which part is shorting a rail. It opens in any PDF viewer with searchable net names in most cases.
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.