Compal schematic in PDF form for the AAL15 platform, board number LA-D071P at revision 1.0. The name does not state which laptop brand or model uses this board, so confirm it from the label printed on the PCB. LA-xxxxP numbers follow Compal's own board numbering, and Compal builds boards for several notebook brands. A technician uses the circuit pages to trace power rails and signals, follow the power-on sequence and find the parts behind a short. Any PDF viewer opens it, and the board number and revision on the PCB should match before you rely on it.
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.