Lenovo service file for a Foxconn board coded 661S03, packed as a 1.12 MB RAR. The 661 prefix may point to the chipset generation, but that is not certain, and the name gives no model. Compare the code printed on the PCB before use. Expect schematic pages inside, useful for tracing the standby supply, the power-on logic and the VRM outputs, and for locating parts when diagnosing shorts or missing rails on desktop boards.
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 @IT_SERVICE_WORLD. 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 | |
|---|---|---|
| @IT_SERVICE_WORLD | 1 Oct 2019 | Open file on RM Schematics |
| @Satale_bios_esquemas_Laptop | 23 Feb 2021 | Open file on RM Schematics |
| @IT_SERVICE_WORLD | 2 May 2021 | 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.