Schematic diagram as PDF for the Foxconn 848M02 desktop mainboard, likely built on the Intel 848 chipset given the model code, catalogued under ECS. No revision is stated in the name, so check the PCB marking against the title block before relying on it. Use it to trace the CPU core regulator, memory and chipset voltage rails, standby supply and the power button path, and to see which components sit on a rail that measures shorted. The compact 740 KB file opens in any PDF reader.
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 @Datalvela_servicios. 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.