Schematic for Compal board LA-9531P at revision 1.0, supplied as a 1.14 MB PDF. The name states no brand or laptop model, so identify the machine by the board number printed on the PCB and confirm the revision matches. LA-xxxxP is Compal's standard mainboard numbering and is shared across systems sold under several brands. These pages are used to trace power rails, check PWM controller and charger circuits, and locate the parts behind a short. Open it in any PDF reader and search for net names.
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.