Schematic set covering Sony MBX-269 and MBX-268 laptop boards, which the name links to the Quanta HK5 and HK6 projects. Supplied as PDF inside a 1.15 MB RAR archive. Sony VAIO boards carry MBX numbers, while the underlying design here comes from Quanta. The diagrams help with tracing power sequencing, checking voltage rails, finding test points and identifying the parts around a short circuit. Open it in any PDF reader, and confirm which of the two board variants matches your unit by checking the label printed on the PCB.
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 @schematicslaptop. 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 | |
|---|---|---|
| @schematicslaptop | 25 Jun 2023 | Open file on RM Schematics |
| @cyberlanelectonik | 19 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 14 Aug 2026 | Open file on RM Schematics |
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.