Acer Aspire E5-751 schematic from Quanta, project ZYV, supplied as a 1.73 MB PDF. The name lists neither a board number nor a revision, so compare the ZYV project code on the mainboard, usually within a DA0 label, before relying on it. The document serves for following power rails from the adapter, measuring regulator outputs, hunting shorts and locating the BIOS chip, EC and test points. A normal PDF reader opens it, and search helps follow nets across pages.
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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The same file was posted more than once. If one link is dead, try the next.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.