Gateway NV53 Series schematic labelled SJV50 TR, an 800 KB PDF filed under Acer, the brand owner. SJV50 is the platform name for this notebook family. The name does not show a board number, so compare the title blocks with the markings on your PCB. Use the diagram to follow power rails from the adapter input through the charger and regulators, locate the EC and BIOS chip circuits, and verify expected voltages. Any PDF viewer will open it, and text search speeds up locating nets.
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.
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How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.