Lenovo schematic for LCFC board NM-C581, supplied as a PDF inside a 2.58 MB RAR archive. NM- numbers come from LCFC, Lenovo's in-house design house, and the name gives no laptop model or revision. Extract it and use it to follow the power-on sequence, measure the main rails, find the source of shorts and check signals around the EC and chipset. Check the board number on the PCB first, since similar NM codes belong to different designs.
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 @laptexdna. Enginerys does not host this file.
All sources (2)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @laptexdna | 20 Feb 2025 | Open file on RM Schematics |
| @cidschematicandboardviewofficial | 20 Feb 2025 | 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.