NM-B531 – Lenovo ThinkPad E485
NM-B531 is the LCFC main board used in the Lenovo ThinkPad E485 and Lenovo ThinkPad E585. ChambersDesignInc.com has indexed 4 files for this board — 2 BIOS files and 2 schematics.
Revisions seen in file names: 1.0. ODM project names: EE485 and EE585. First posted in February 2021 in Schematics & Boardviews Archive, Cyberlan Electronics and BIOS Archive.
BIOS dumps 2
Schematics 2
Board facts
| Board number | NM-B531 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-B |
| ODM project | EE485, EE585 |
| Revisions | 1.0 |
| CPU generation | AMD Ryzen 2000 series |
| First seen | 2021-02-23 |
| 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-B531
- Lenovo ThinkPad E485
- Lenovo ThinkPad E585
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 |
|---|---|---|
| .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-B531 board?
Files in the catalog link NM-B531 to the Lenovo ThinkPad E485 and Lenovo ThinkPad E585.
Who designed the NM-B531 board?
NM-B531 is an LCFC board number used by Lenovo.
Is there a boardview for NM-B531?
No boardview has been indexed for NM-B531 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.