Boardview for the LCFC NM-B421 motherboard found in the Lenovo ThinkPad E480 and E580, packed in a 1.51 MB RAR archive. A boardview shows component placement and net connectivity on both PCB sides, letting you locate a capacitor, test point or connector pin quickly and see which parts share a shorted net. Open the extracted file in a viewer such as OpenBoardView, FlexBV or Boardviewer, and use it with the matching schematic. Check that the board number silkscreened on the PCB really reads NM-B421 before relying on the layout.
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 @Satale_bios_esquemas_Laptop. 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 | |
|---|---|---|
| @Satale_bios_esquemas_Laptop | 23 Feb 2026 | Open file on RM Schematics |
| @Satale_bios_esquemas_Laptop | 20 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.