PDF schematic for a board identified as 945M09, a code matching the Foxconn style for an Intel 945 chipset micro-ATX motherboard, catalogued under ECS. No revision or other detail appears in the name, so confirm the model and version printed on the PCB first. The sheets help trace the CPU core regulator, DDR2 supply, chipset and ICH standby rails, clock generator and the power button logic, and reveal which parts share a shorted net. Any PDF viewer opens the file at just under 1 MB.
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.