Compal schematic labelled LA-2791, provided as a 1.30 MB PDF. The name gives no revision and no notebook model. Boards in the LA series come from Compal, which supplies mainboards to several laptop brands. Repair technicians use a schematic like this to trace power rails from the charger input through the regulators, follow signals to connectors and controllers, and narrow down the parts behind a short. Check the board number and revision printed on the PCB against the title block before relying on component values.
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.