Schematic for the Sony VAIO VGN-AR series in a 1.07 MB PDF; the name gives no board number, ODM project or revision, so identify those from the title block inside. The AR series came with more than one board, which makes this check important. Use the diagrams to trace power rails, locate regulators, and follow signals during short or no-power diagnosis. Open it with any PDF reader and compare the MBX number printed on your motherboard with the document before trusting 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.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.