NM-B241 – Lenovo IdeaPad 320 15IKB
The NM-B241 (LCFC) motherboard is found in the Lenovo IdeaPad 320 15IKB, Lenovo IdeaPad DG421, Lenovo 320-15ISK and Lenovo IdeaPad 320. 11 files are indexed for this board: 6 BIOS files, 4 schematics, 1 boardview and 1 EC firmware image.
File names mention revision 1.0. ODM project names: DG521 and DG721. The earliest file dates from August 2018 (BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics).
BIOS dumps 6
Schematics 4
Boardviews 1
From the uploader
Lenovo IdeaPad 320-15IKB NM-B241 NM-B242 DG421 DG521 DG721
Model: Lenovo IdeaPad 320-15IKB
Platforma: LCFC DG421 DG521 DG721 NM-B241 NM-B242 DIS
Rev: 1.0
Board facts
| Board number | NM-B241 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-B |
| ODM project | DG521, DG721 |
| Revisions | 1.0 |
| Graphics | discrete GPU |
| First seen | 2018-08-20 |
| 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-B241
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
Is there a boardview for NM-B241?
Yes, 1 boardview file in .bdv and .tvw format.
Which laptops use the NM-B241 board?
Files in the catalog link NM-B241 to the Lenovo IdeaPad 320 15IKB, Lenovo IdeaPad DG421, Lenovo 320-15ISK, Lenovo IdeaPad 320, Lenovo IdeaPad DG521 and Lenovo IdeaPad DG721.
Who designed the NM-B241 board?
NM-B241 is an LCFC board number used by Lenovo.
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.