Schematic in PDF form for the Sony MBX-250 board, used in the VAIO Z50 series, with HR, -1m and 0302 tokens that likely denote a revision and date code of the drawing.

Sony VAIO VPCEG series BIOS dump for the MBX-250 mainboard, using Sony's MBX board numbering.

Archive covering the Sony VAIO VPCEG16FM and VPCEG27FM, part of the VPC-EG series, built on Sony board MBX-250.

Sony VAIO schematic for board MBX-250, designed by Wistron under its Z40HR project name, as a 2.46 MB PDF.

Sony VAIO motherboard schematic for board MBX-250, a 1.68 MB PDF. The name gives no ODM code or revision, and since Sony's MBX numbers span boards from several…

Schematic PDF for a Sony VAIO-family motherboard designated MBX-250, Sony's own internal board code.

Sony motherboard MBX-250 documentation in a 1.52 MB RAR, with no model, ODM or revision in the name. The archive most likely contains a schematic for this VAIO board.

Sony VAIO VPCEG BIOS dump for the MBX-250 motherboard, with Z40HR also in the name and a note indicating a cleaned image, likely with the Management Engine region reset.

Archive for the Sony VAIO VPCEG18FG notebook built on mainboard MBX-250. The name misspells Vaio, which is harmless.

Archive tied to Sony board MBX-250, with further tokens Z50 HR, -1m and 0302 in the name, stored as a 4.07 MB RAR.

PDF circuit diagram set for Sony board MBX-250, 1.68 MB, apparently another copy of the same document stored under a numbered name.

Firmware dump for a Sony VAIO on the MBX-250 board, noted as an Intel Core i5 version and marked Z40HR MB, delivered in a RAR of about 1.86 MB.

Schematic for the Sony VAIO board MBX-250, packed as a RAR archive containing a PDF. The name singles out the VGA section and the RT8208BGQW, a Richtek PWM controller…

Firmware dump for a Sony VAIO laptop on the MBX-250 mainboard, with the tokens Z40HR, S0203-2 and 48.4MP01.021 in the name.

Sony repair file for the VPCEG-212T notebook on the MBX-250 board, with Z40HR and S0203-2 also in the name, likely the ODM project and board codes.

Sony MBX-250 motherboard schematic in PDF, with Z40HR appearing as the project or platform code.

Archive for a Sony laptop board MBX-250, with Z40HR, S0203-2 and PCB number 48.4MP06.021 in the title; the 48.4 prefix follows the pattern Wistron uses for its boards.

Raw 4 MB BIOS dump for a Sony VAIO PCG-61A11W on the MBX-250 motherboard, marked for the Core i3 single-chip CPU variant.

Circuit diagram for the Sony VAIO VPCEG36EG laptop, board MBX-250, using Sony's own MBX board numbering.

Sony motherboard schematic for the Z40HR platform, labelled MB S0203-2, linked to the VAIO VPCEG-212T model, in a 1.58 MB PDF.