NM-A931 – Lenovo ThinkPad T470
The NM-A931 (LCFC) motherboard is found in the Lenovo ThinkPad T470 and Lenovo IdeaPad T470. 17 files are indexed for this board: 15 BIOS files, 2 schematics and 1 EC firmware image.
File names mention revision 2.0 or 0.1. BIOS images are 1 MB, 8 MB and 16 MB. ODM project name: CT470. First posted in December 2020 in BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics.
BIOS dumps 15
Schematics 2
From the uploader
LENOVO IDEAPAD T470 CT470 NM-A931 REV 2.0 2016-10-28 CLEAR ME REGION BIOS & EC
LENOVO T470 CT470 NM-A931 REV 2.0 2016-10-28 SR2EY Intel Core i5-6200U CLEAN ME & MEC 1653L
LENOVO THINKPAD T470 CT470 NM-A931 REV 2.0 2016-10-28 SR340 i5-6200U TESTED OK
Board facts
| Board number | NM-A931 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-A |
| ODM project | CT470 |
| Revisions | 2.0, 0.1 |
| BIOS chip size | 1 MB, 8 MB, 16 MB |
| Flash chip | W25Q128JV |
| CPU generation | Intel 6th gen, Intel 7th gen |
| First seen | 2020-12-29 |
| 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-A931
- Lenovo ThinkPad T470
- Lenovo IdeaPad T470
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.
EC (embedded controller) firmware runs the keyboard controller, power sequencing, battery charging and fans. Depending on the board it lives in a separate chip (ENE KB9012, ITE IT85xx, Nuvoton NPCE) or inside the main SPI image, so check which applies before flashing.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| .rar | RAR archive | 7-Zip or WinRAR |
| .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-A931 board?
NM-A931 is an LCFC board number used by Lenovo.
What BIOS chip size does NM-A931 use?
The BIOS images for NM-A931 are 1 MB, 8 MB and 16 MB. Flash chips named in the files: W25Q128JV.
Is there a boardview for NM-A931?
No boardview has been indexed for NM-A931 yet; the schematic is available on this page.
Are these files free?
1 of the posts are marked VIP or paid in their source channel; the others are ordinary posts. ChambersDesignInc.com does not host or sell files.
Which laptops use the NM-A931 board?
Files in the catalog link NM-A931 to the Lenovo ThinkPad T470 and Lenovo IdeaPad T470.
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.