Sony service schematic covering the MBX-187 motherboard, paired in the name with the code IRX-5040, which is likely the ODM or internal project reference for the same design. Sony uses the MBX numbering for its VAIO main boards, so the number printed on the PCB is the key identifier to check. The PDF is handy for following power rails from the charger circuit through to CPU and memory supplies, checking a short, and locating key components and test points while repairing a no-power or no-display fault.
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 @abgm_manutencao_esquemas. Enginerys does not host this file.
All sources (5)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @abgm_manutencao_esquemas | 15 Jul 2020 | Open file on RM Schematics |
| @Satale_bios_esquemas_Laptop | 12 Oct 2022 | Open file on RM Schematics |
| @bartonarquivos | 8 Sept 2023 | Open file on RM Schematics |
| @ShareMan_Electronic_Files | 7 May 2025 | Open file on RM Schematics |
| @cyberlanelectonik | 1 Oct 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.