Another copy of the Quanta ST6 schematic for motherboard DA0ST6MB6E0, also 2.56 MB in PDF form and likely identical to the other ST6 files. A 6A marking appears in the name, probably the revision. Quanta DA0 numbers contain the project code, here ST6, and are printed on the PCB, so verify the number and revision first. Open it in any PDF reader to trace power and signal nets, check component values and locate test points when repairing the board.
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.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)