NM-A482 – Lenovo IdeaPad 300
NM-A482 is the LCFC main board used in the Lenovo IdeaPad 300 and Lenovo IdeaPad 300 15ISK. 7 files are indexed for this board: 3 BIOS files, 3 schematics and 1 boardview.
Revisions seen in file names: 1.0. The BIOS dumps are 8 MB images. ODM project names: BMWQ1 and BMWQ2. First posted in March 2018 in Schematics & Boardviews Archive, Cyberlan Electronics and BIOS Archive.
BIOS dumps 3
Schematics 3
Boardviews 1
Board facts
| Board number | NM-A482 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-A |
| ODM project | BMWQ1, BMWQ2 |
| Revisions | 1.0 |
| BIOS chip size | 8 MB |
| Flash chip | GD25Q64 |
| Graphics | UMA (integrated) |
| First seen | 2018-03-05 |
| Source channels | Schematics & Boardviews Archive, Cyberlan Electronics, BIOS Archive, BIOS Skema Boardview Laptop |
| 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-A482
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 |
|---|---|---|
| .bdv | Honhan .bdv boardview | OpenBoardView, FlexBV or Honhan BoardViewer |
| 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 |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
Questions
Is there a boardview for NM-A482?
Yes, 1 boardview file in .bdv format.
Which laptops use the NM-A482 board?
Files in the catalog link NM-A482 to the Lenovo IdeaPad 300 and Lenovo IdeaPad 300 15ISK.
What BIOS chip size does NM-A482 use?
The BIOS images for NM-A482 are 8 MB. Flash chips named in the files: GD25Q64.
Who designed the NM-A482 board?
NM-A482 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.