Schematic for Sony motherboard MBX-250 in PDF format, 1.68 MB; the name does not mention the VAIO model, the ODM project or the revision. MBX numbers are Sony's own board designations for designs built by contract manufacturers, so the inside pages may show an ODM code as well. Use the diagrams to trace power rails, identify components on a shorted line, and follow signals from the chipset to connectors. Confirm that MBX-250 and its revision on the PCB match the title block before relying on values.
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 @alischematics. Enginerys does not host this file.
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The standard format for schematics, block diagrams, power-sequence charts and service manuals.