NM-E422 – Lenovo ThinkPad T14S Gen 3
NM-E422 is the LCFC main board used in the Lenovo ThinkPad T14S Gen 3. 2 files are indexed for this board: 1 BIOS file and 1 boardview.
Revisions seen in file names: 0.5 and 1.0. The BIOS dumps are 16 MB and 32 MB images. First posted in July 2023 in BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics.
BIOS dumps 1
Boardviews 1
Board facts
| Board number | NM-E422 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-E |
| Revisions | 0.5, 1.0 |
| BIOS chip size | 16 MB, 32 MB |
| First seen | 2023-07-11 |
| Source channels | BIOS Archive, Schematics & Boardviews Archive, Cyberlan Electronics |
| About the number | LCFC is Lenovo's joint venture with Compal; its main boards use NM- numbers and sub-boards NS- numbers. |
Laptops that use NM-E422
- Lenovo ThinkPad T14S Gen 3
What these files are for
A BIOS dump is a full image of the board's SPI flash chip. It is written back with an SPI programmer when the original firmware is corrupted, after a chip replacement, or to recover from a failed update. Read and save the original chip first: serial number, DMI data and the Intel ME / AMD PSP state differ between boards.
A boardview is the component placement map of the PCB: click a part or a net and the viewer highlights where it is and what it connects to. Used together with the schematic to find test points.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| .bdv | Honhan .bdv boardview | OpenBoardView, FlexBV or Honhan BoardViewer |
| .rar | RAR archive | 7-Zip or WinRAR |
| .tvw | Tebo-ICT .tvw boardview | FlexBV or Tebo-ICT View |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
Questions
Who designed the NM-E422 board?
NM-E422 is an LCFC board number used by Lenovo.
Is there a boardview for NM-E422?
Yes, 1 boardview file in .bdv and .tvw format.
Which laptops use the NM-E422 board?
Files in the catalog link NM-E422 to the Lenovo ThinkPad T14S Gen 3.
What BIOS chip size does NM-E422 use?
The BIOS images for NM-E422 are 16 MB and 32 MB.
Where do the download links go?
Each button opens the original public Telegram post the file was shared in. ChambersDesignInc.com only indexes and cross-references those posts.