Circuit diagrams for the Compal LA-4031P motherboard at revision 0.2, provided in an 823 KB PDF. No retail laptop model or platform is stated, only the Compal board code. The LA-xxxxP pattern is Compal's ODM numbering, and an early 0.2 revision may not match a production board in every detail, so compare the PCB marking. Open it in any PDF reader to follow power rails and the power-on sequence, identify regulators and find which components to measure on a shorted line.
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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