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 that is likely used for one of the voltage rails on this board. Open the PDF in any PDF reader to trace power rails, follow signals, find component references and check the controller's feedback and enable lines when diagnosing a dead rail or a short. Before relying on it, check that the MBX number printed on the PCB matches.
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 | 17 Jul 2022 | Open file on RM Schematics |
| @cyberlanelectonik | 23 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.