NM-A272 – Lenovo G50-70
NM-A272 is the LCFC main board used in the Lenovo G50-70, Lenovo 70, Lenovo 20351 and Lenovo G40 70. 15 files are indexed for this board: 12 BIOS files, 3 schematics and 3 EC firmware images.
File names mention revision 1.0. The BIOS dumps are 8 MB images. ODM project names: ACLU1 and ACLU2. First posted in January 2017 in BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics.
BIOS dumps 12
Schematics 3
From the uploader
LENOVO G50-70 G40-70 ACLU1 ACLU2 UMA NM-A272 REV 1.0 2013-12-05
LENOVO Z50-70 ACLUA ACLUB NM-A272 REV 1.0 2013-12-27 N15GS-GT-S-A2
Board facts
| Board number | NM-A272 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-A |
| ODM project | ACLU1, ACLU2 |
| Revisions | 1.0 |
| BIOS chip size | 8 MB |
| EC / KBC chip | IT8586E |
| Graphics | UMA (integrated) |
| First seen | 2017-01-26 |
| Source channels | BIOS Archive, Schematics & Boardviews Archive, Cyberlan Electronics, BIOS Files |
| 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-A272
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 |
|---|---|---|
| .7z | 7-Zip archive | 7-Zip or WinRAR |
| .bin | raw SPI flash image | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
| PDF schematic | any PDF reader; Sumatra PDF and Foxit handle large schematics well | |
| .rar | RAR archive | 7-Zip or WinRAR |
| .zip | ZIP archive | 7-Zip, WinRAR or the built-in Windows extractor |
Questions
Is there a boardview for NM-A272?
No boardview has been indexed for NM-A272 yet; the schematic is available on this page.
Which laptops use the NM-A272 board?
Files in the catalog link NM-A272 to the Lenovo G50-70, Lenovo 70, Lenovo 20351, Lenovo G40 70, Lenovo G50 70 G40 and Lenovo Z50.
Who designed the NM-A272 board?
NM-A272 is an LCFC board number used by Lenovo.
What BIOS chip size does NM-A272 use?
The BIOS images for NM-A272 are 8 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.