Schematic PDF of 1.02 MB named only by the code mbx247hk1, with no brand, model or revision given.

Sony mainboard schematic identified only by the code mbx247hk1 in the file name, which follows Sony's MBX board numbering, likely MBX-247.

Schematic in PDF form, 1.02 MB, whose name points to MBX-247, a Sony notebook mainboard designation, with an HK1 suffix that likely marks a sub-version or document…

PDF schematic, 1.02 MB, whose name points to the Sony VAIO board MBX-247; the trailing hk1 token is not explained by the name and may denote a variant or build.