Full circuit schematic in PDF for the Dell Latitude E7440, built on Compal board LA-9591P. The LA-xxxxP pattern is Compal's own numbering, so Compal designed the board while Dell sells the laptop. Use the diagrams to trace power rails from the charger input through the system regulators, follow enable and power-good signals, and find which component sits on a shorted line. Any PDF reader opens it. Before you rely on it, confirm that LA-9591P and its revision printed on the PCB match, because later revisions can move parts.
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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