NM-A252 – Lenovo ThinkPad T450
NM-A252 is the LCFC main board used in the Lenovo ThinkPad T450. ChambersDesignInc.com has indexed 4 files for this board — 2 BIOS files and 2 schematics.
Revisions seen in file names: 1.0. ODM project name: AIVL0. First posted in December 2020 in Schematics & Boardviews Archive, Cyberlan Electronics and BIOS Archive.
BIOS dumps 2
Schematics 2
From the uploader
LENOVO THINKPAD T450 TYPE 20BV AIVL0 NM-A252 REV 1.0 2014-12-22 N16S-GT-S-A2 SR23W
Board facts
| Board number | NM-A252 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-A |
| ODM project | AIVL0 |
| Revisions | 1.0 |
| Graphics | UMA (integrated) |
| First seen | 2020-12-01 |
| 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-A252
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.
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
Is there a boardview for NM-A252?
No boardview has been indexed for NM-A252 yet; the schematic is available on this page.
Which laptops use the NM-A252 board?
Files in the catalog link NM-A252 to the Lenovo ThinkPad T450.
Who designed the NM-A252 board?
NM-A252 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.