NM-C641 – Lenovo ThinkPad T15P Gen 1
The NM-C641 (LCFC) motherboard is found in the Lenovo ThinkPad T15P Gen 1. ChambersDesignInc.com has indexed 2 files for this board — 1 BIOS file, 1 schematic and 1 EC firmware image.
Revisions seen in file names: 2.0. The BIOS dumps are 32 MB images. First posted in February 2023 in Schematics & Boardviews Archive, Cyberlan Electronics and BIOS Archive.
BIOS dumps 1
Schematics 1
Board facts
| Board number | NM-C641 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-C |
| Revisions | 2.0 |
| BIOS chip size | 32 MB |
| First seen | 2023-02-08 |
| Source channels | Schematics & Boardviews Archive, Cyberlan Electronics, BIOS Archive |
| 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-C641
- Lenovo ThinkPad T15P Gen 1
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.
EC (embedded controller) firmware runs the keyboard controller, power sequencing, battery charging and fans. Depending on the board it lives in a separate chip (ENE KB9012, ITE IT85xx, Nuvoton NPCE) or inside the main SPI image, so check which applies before flashing.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| PDF schematic | any PDF reader; Sumatra PDF and Foxit handle large schematics well | |
| .rar | RAR archive | 7-Zip or WinRAR |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
Questions
Which laptops use the NM-C641 board?
Files in the catalog link NM-C641 to the Lenovo ThinkPad T15P Gen 1.
Is there a boardview for NM-C641?
No boardview has been indexed for NM-C641 yet; the schematic is available on this page.
What BIOS chip size does NM-C641 use?
The BIOS images for NM-C641 are 32 MB.
Who designed the NM-C641 board?
NM-C641 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.