NM-C911 – Lenovo Legion GY550
The Lenovo Legion GY550, Lenovo 551, Lenovo 554 and Lenovo 556 are built on the NM-C911 board designed by LCFC. The catalog lists 9 files for it: 3 BIOS files, 1 schematic and 5 boardviews.
File names mention revision 1.0 or 0.2. ODM project names: GY559 and GY750. First posted in July 2021 in Cyberlan Electronics, Schematics & Boardviews Archive and BIOS Archive.
BIOS dumps 3
Schematics 1
Boardviews 5
Board facts
| Board number | NM-C911 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-C |
| ODM project | GY559, GY750 |
| Revisions | 1.0, 0.2 |
| CPU generation | Intel 10th gen |
| First seen | 2021-07-10 |
| Source channels | Cyberlan Electronics, Schematics & Boardviews Archive, BIOS Archive, Boardview Schematics |
| 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-C911
- Lenovo Legion GY550
- Lenovo 551
- Lenovo 554
- Lenovo 556
- Lenovo Legion GY551
- Lenovo Legion GY554
- Lenovo Legion GY559
- Lenovo Legion Y7000P
- Lenovo Legion Y7000P2020H
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-C911 board?
NM-C911 is an LCFC board number used by Lenovo.
Which laptops use the NM-C911 board?
Files in the catalog link NM-C911 to the Lenovo Legion GY550, Lenovo 551, Lenovo 554, Lenovo 556, Lenovo Legion GY551, Lenovo Legion GY554, Lenovo Legion GY559, Lenovo Legion Y7000P and Lenovo Legion Y7000P2020H.
Is there a boardview for NM-C911?
Yes, 5 boardview files in .bdv and .tvw format.
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.