PDF schematic whose name mentions Z470, 989 and PCH, which suggests documentation around an Intel platform controller hub, possibly with a Z470 board code. The brand, model and revision are not stated, so treat the identification with care and check the board markings. Around 1.53 MB, it can help trace the rails feeding the PCH, follow clock, reset and power-good signals, and find the parts tied to a shorted line. Open it in any PDF reader and compare the net names against the actual PCB before relying on it.
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 @CLRINDORE. 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.