PDF schematic of 900 KB for the Quanta R23 laptop motherboard. The file name carries no revision number or product model, only the Quanta project code. As an ODM, Quanta supplies boards to several notebook brands, so look for the R23 marking on the PCB to confirm a match. The diagram is useful for no-power and no-display diagnosis: follow rails from the DC jack through the charger and system regulators, check enable signals and identify the components that load a shorted line. Compare the revision on the board too.
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 @smschematics. 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.