NM-C433 – Lenovo Yoga C740-15IML
The Lenovo Yoga C740-15IML is built on the NM-C433 board designed by LCFC. The catalog lists 5 files for it: 3 BIOS files, 1 schematic, 1 boardview and 2 EC firmware images.
File names mention revision 1.0. BIOS images are 16 MB. ODM project name: FYG50. First posted in March 2021 in BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics.
BIOS dumps 3
Schematics 1
Boardviews 1
Board facts
| Board number | NM-C433 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-C |
| ODM project | FYG50 |
| Revisions | 1.0 |
| BIOS chip size | 16 MB |
| First seen | 2021-03-24 |
| 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-C433
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
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.
Is there a boardview for NM-C433?
Yes, 1 boardview file in .bdv and .tvw format.
Who designed the NM-C433 board?
NM-C433 is an LCFC board number used by Lenovo.
Which laptops use the NM-C433 board?
Files in the catalog link NM-C433 to the Lenovo Yoga C740-15IML.
What BIOS chip size does NM-C433 use?
The BIOS images for NM-C433 are 16 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.