Schematic diagram of the Quanta AT1 notebook motherboard in PDF form, 1.76 MB. The file name carries no revision or brand detail, and its size differs from other AT1 copies, so it may be a different revision; check the PCB marking. Quanta builds laptop boards for many vendors under internal project codes like AT1. Use the sheets to trace power and signal nets, identify components around a failed circuit, and check expected voltages at connectors and test points. Any PDF viewer will open it, and text search helps locate net names.
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.