Schematic for the Quanta BLBD board, a PDF of 973 KB. Quanta labels its motherboards with project codes such as BLBD, usually silkscreened near a DA or similar part number on the PCB, and the name does not say which laptop brand or model used it. Compare the board code and revision with the title block before use. The document helps trace supply rails from the adapter input, follow power-good and reset signals, check a short to ground and identify components by reference designator. Any PDF reader will open it.
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 @cyberlanelectonik. Enginerys does not host this file.
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The standard format for schematics, block diagrams, power-sequence charts and service manuals.