NM-D231 – Sony HS450
The NM-D231 (LCFC) motherboard is found in the Sony HS450 and Lenovo Yoga 14SIHU. ChambersDesignInc.com has indexed 6 files for this board — 4 BIOS files, 1 schematic and 1 boardview.
Revisions seen in file names: 1.0. ODM project name: HS450. The earliest file dates from October 2023 (BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics).
BIOS dumps 4
Schematics 1
Boardviews 1
From the uploader
LENOVO YOGA 14SIHU 2021 HS450 NM-D231 REV 1.0 i5-113300H N18S-G5-B-KA-A1 WORKED BIOS 100%
Board facts
| Board number | NM-D231 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-D |
| ODM project | HS450 |
| Revisions | 1.0 |
| First seen | 2023-10-24 |
| 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-D231
- Sony HS450
- Lenovo Yoga 14SIHU
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 |
| .bin | raw SPI flash image | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
| 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 |
Questions
Is there a boardview for NM-D231?
Yes, 1 boardview file in .bdv and .tvw format.
Who designed the NM-D231 board?
NM-D231 is an LCFC board number used by Sony.
Which laptops use the NM-D231 board?
Files in the catalog link NM-D231 to the Sony HS450 and Lenovo Yoga 14SIHU.
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.