Circuit diagram for the Quanta AT5 notebook motherboard, a 1.22 MB PDF. The file name gives no revision, so compare the sheets against the silkscreen on your board before working from them. Quanta designs and manufactures laptop boards for many brands and labels each project with a short code such as AT5. The schematic helps with tracing voltage rails, identifying MOSFETs and controllers in the power stage, and locating the parts on a line that measures shorted to ground. Opens in any standard PDF viewer.
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.
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The standard format for schematics, block diagrams, power-sequence charts and service manuals.