Repair guide in PDF format for the ASUS PRIME Q270M-C desktop motherboard, 1.61 MB. Indexed as a schematic, it is more likely a service or troubleshooting document than a full circuit diagram, judging by the name. Guides of this kind typically outline power sequencing, key voltages and checkpoints for common faults on the board. Use it together with the boardview for the same model to locate the parts it mentions, and confirm your board revision since layouts can change between releases.
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 @boardviews_schematics. 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.