PDF schematic for the Samsung NP Q40 portable, 1.28 MB, with no board number or revision in the name. The diagram helps trace the DC input, charging circuit and system rails, find which component loads a shorted net and follow enable signals through the boot sequence. Open it in any PDF viewer and search net or reference designator names to move around. Samsung boards are marked with a BA41 part number; compare it with the title block so you know the schematic actually corresponds to the motherboard on your bench.
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.