Quanta N91A motherboard schematic, revision 1A, board number DAN91AMB6D0, in a 1.43 MB PDF. The DA prefix and MB code follow Quanta's board numbering, so this is the ODM's own design document, though the laptop brand is not named. Open it in any PDF viewer to trace power rails, find the charging circuit, voltage regulators and test points, and follow signals between chips and connectors when diagnosing a short or missing voltage. Confirm the board number and revision printed on the PCB before relying on part references.
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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