Compal schematic for the LA-3491P motherboard at revision 0.5, supplied as a 925 KB PDF. The LA-xxxxP code is Compal's own board numbering, and Compal builds boards for several notebook brands, so the laptop model is not stated here. Technicians use these pages to follow power rails, trace signals between the EC, chipset and connectors, and find which components sit on a shorted line. Check that the board number and revision silkscreened on the PCB match r0.5 before trusting part values or circuit details.
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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