Sony VAIO VGN-AR series schematic for mainboard MBX-156, with MS20 as the associated design code. Sony labels its VAIO boards with MBX-numbers, usually printed on the PCB and the service sticker. The 3.04 MB PDF is fairly complete and suits tracing power rails, the charger circuit, GPU and chipset supplies and connector signals. Before trusting component values, check that MBX-156 and the board revision on the hardware match this document, since VGN-AR models used more than one board.
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.
All sources (3)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @alischematics | 13 Sept 2021 | Open file on RM Schematics |
| @pepeelectronica | 28 Apr 2022 | Open file on RM Schematics |
| @schematics_bios | 3 Aug 2026 | Open file on RM Schematics |
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.