RAR archive of about 1.4 MB containing the schematic for Lenovo board NM-C661, with no laptop model or revision stated in the name. The NM- prefix is LCFC's numbering pattern, the Lenovo-owned manufacturer, so confirm the same code on the motherboard silkscreen. Unpack it with WinRAR or 7-Zip and read the PDF to trace supply rails, locate enable and power-good signals and check component values when hunting shorts or missing voltages. Check the board revision separately, as none is mentioned.
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 | 27 Jan 2026 | Open file on RM Schematics |
| @cyberlanelectonik | 18 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 27 Oct 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.