NM-B301 – Lenovo IdeaPad 320 14IAP
The NM-B301 (LCFC) motherboard is found in the Lenovo IdeaPad 320 14IAP. The catalog lists 7 files for it: 5 BIOS files, 1 schematic and 1 boardview.
Revisions seen in file names: 1.0. BIOS images are 8 MB. ODM project names: DG424 and DG524. The earliest file dates from April 2019 (BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics).
BIOS dumps 5
Schematics 1
Boardviews 1
From the uploader
LENOVO 320-15IAP Laptop (ideapad) - Type 80XR DG424 DG524 NM-B301 REV1.0 it8986e SR2Z5 Pentium N4200 BIOS & KBEC
Board facts
| Board number | NM-B301 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-B |
| ODM project | DG424, DG524 |
| Revisions | 1.0 |
| BIOS chip size | 8 MB |
| First seen | 2019-04-20 |
| 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-B301
- Lenovo IdeaPad 320 14IAP
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 |
| PDF schematic | any PDF reader; Sumatra PDF and Foxit handle large schematics well | |
| .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-B301 board?
NM-B301 is an LCFC board number used by Lenovo.
Which laptops use the NM-B301 board?
Files in the catalog link NM-B301 to the Lenovo IdeaPad 320 14IAP.
Is there a boardview for NM-B301?
Yes, 1 boardview file in .bdv and .tvw format.
What BIOS chip size does NM-B301 use?
The BIOS images for NM-B301 are 8 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.