NM-C891 – Lenovo ThinkPad T14S Gen 1
The NM-C891 (LCFC) motherboard is found in the Lenovo ThinkPad T14S Gen 1, Lenovo ThinkPad X13 and Lenovo ThinkPad X13 Gen 1. ChambersDesignInc.com has indexed 6 files for this board — 4 BIOS files, 2 schematics, 1 boardview and 1 EC firmware image.
File names mention revision 1.0. First posted in April 2022 in BIOS Archive, Cyberlan Electronics and Schematics & Boardviews Archive.
BIOS dumps 4
Schematics 2
From the uploader
Lenovo Thinkpad X13 T14s Gen 1 LCFC GT4A3_GX3A2 NM-C891 Rev 1.0 BoardView (BDV)(.TVW)
Board facts
| Board number | NM-C891 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-C |
| Revisions | 1.0 |
| CPU generation | Intel 10th gen |
| First seen | 2022-04-10 |
| Source channels | BIOS Archive, Cyberlan Electronics, Schematics & Boardviews 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-C891
- Lenovo ThinkPad T14S Gen 1
- Lenovo ThinkPad X13
- Lenovo ThinkPad X13 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.
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 |
|---|---|---|
| .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-C891 board?
Files in the catalog link NM-C891 to the Lenovo ThinkPad T14S Gen 1, Lenovo ThinkPad X13 and Lenovo ThinkPad X13 Gen 1.
Who designed the NM-C891 board?
NM-C891 is an LCFC board number used by Lenovo.
Is there a boardview for NM-C891?
Yes, 1 boardview file.
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.