Compal LA-4101P schematic for the HP CQ40, a 1.64 MB PDF that opens in any standard viewer. No revision or graphics variant is mentioned in the name, so check the title block and compare it with the markings on the motherboard. Compal uses LA- numbering for its laptop boards. Use it for tracing power rails and signals, checking charging and standby circuits, finding test points and isolating shorts to a single capacitor, MOSFET or chip.
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.