Schematic in PDF for LCFC board NM-A491, project name BMWD1, revision 1.0, packaged as a 1.99 MB RAR. NM- numbering identifies LCFC, Lenovo's in-house design house. A matching boardview for the same board pairs well with this document for locating parts. Technicians rely on it to follow power rails, check enable and power-good signals and diagnose shorts. Ensure the PCB carries NM-A491 and revision 1.0 before trusting component values.
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 | 23 Jul 2023 | Open file on RM Schematics |
| @cyberlanelectonik | 18 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.