Schematic for Compal motherboard LA-B211P, revision 1.0, as a 962 KB PDF; the laptop brand and model are not stated. The LA-xxxxP code belongs to Compal, an ODM building boards for several notebook brands, so identify the board by the silkscreen marking. A repairer uses this document to trace power rails, check the startup sequence, and find parts associated with a short or missing voltage. Confirm that revision 1.0 matches the PCB, then open it in any PDF reader and search by net name.
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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The standard format for schematics, block diagrams, power-sequence charts and service manuals.