A 1.43 MB PDF copy of the Quanta N91A mainboard schematic, revision 1A, for PCB number DAN91AMB6D0. The copy number in the name indicates it duplicates other uploads of the same document. In Quanta numbering, the DA prefix marks the bare circuit board, and the trailing characters carry the board revision. A technician uses these pages to follow voltage rails from the adapter input through the charger and regulators, check where a short sits and identify signal names. Verify the number printed on the board before comparing measurements.
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 @abgm_manutencao_esquemas. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.