NM-B081 – Lenovo ThinkPad T470S
NM-B081 is the LCFC main board used in the Lenovo ThinkPad T470S. 5 files are indexed for this board: 2 BIOS files, 1 schematic, 2 boardviews and 1 EC firmware image.
File names mention revision 1.0. ODM project name: DT471. The earliest file dates from June 2021 (Schematics & Boardviews Archive, Cyberlan Electronics and BIOS Archive).
BIOS dumps 2
Schematics 1
Boardviews 2
Board facts
| Board number | NM-B081 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-B |
| ODM project | DT471 |
| Revisions | 1.0 |
| Graphics | UMA (integrated) |
| First seen | 2021-06-15 |
| Source channels | Schematics & Boardviews Archive, Cyberlan Electronics, BIOS Archive, Boardview Schematics |
| 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-B081
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 schematic is the circuit diagram of the main board: power rails, power-up sequence, component values and net names. It is the reference for measuring voltages and tracing a fault.
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 |
| .zip | ZIP archive | 7-Zip, WinRAR or the built-in Windows extractor |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
Questions
Who designed the NM-B081 board?
NM-B081 is an LCFC board number used by Lenovo.
Is there a boardview for NM-B081?
Yes, 2 boardview files in .bdv and .tvw format.
Which laptops use the NM-B081 board?
Files in the catalog link NM-B081 to the Lenovo ThinkPad T470S.
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.