Schematic PDF identified only by the Quanta board code DA0Y0AMBC60, with no laptop model stated in the name; the code may be a variant spelling of DA0Y0AMB6C0. Any PDF viewer opens it, and it is used to trace power rails, follow signals, find components and work out the power-up sequence when diagnosing shorts or no-power faults. Quanta uses the DA0xxxMBxxx pattern, so compare the code and revision letter on your PCB with the drawing. At 705 KB it may be a compact or partial document.
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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How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.