NM-A471 – Lenovo IdeaPad 300-15IBR
NM-A471 is the LCFC main board used in the Lenovo IdeaPad 300-15IBR, Lenovo 300-14IBR and Lenovo IdeaPad 300. ChambersDesignInc.com has indexed 13 files for this board — 9 BIOS files, 3 schematics and 2 EC firmware images.
Revisions seen in file names: 2.0 and 0.4. The BIOS dumps are 8 MB images. ODM project names: BMWC1 and BMWC2. The earliest file dates from July 2017 (BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics).
BIOS dumps 9
Schematics 3
EC / KBC firmware 1
Board facts
| Board number | NM-A471 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-A |
| ODM project | BMWC1, BMWC2 |
| Revisions | 2.0, 0.4 |
| BIOS chip size | 8 MB |
| EC / KBC chip | IT8886HE |
| First seen | 2017-07-11 |
| Source channels | BIOS Archive, Schematics & Boardviews Archive, Cyberlan Electronics |
| 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-A471
- Lenovo IdeaPad 300-15IBR
- Lenovo 300-14IBR
- Lenovo IdeaPad 300
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 |
|---|---|---|
| .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
What BIOS chip size does NM-A471 use?
The BIOS images for NM-A471 are 8 MB.
Who designed the NM-A471 board?
NM-A471 is an LCFC board number used by Lenovo.
Which laptops use the NM-A471 board?
Files in the catalog link NM-A471 to the Lenovo IdeaPad 300-15IBR, Lenovo 300-14IBR and Lenovo IdeaPad 300.
Is there a boardview for NM-A471?
No boardview has been indexed for NM-A471 yet; the schematic is available on this page.
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.