NM-A805 – Lenovo IdeaPad 110-15IBR
The NM-A805 (LCFC) motherboard is found in the Lenovo IdeaPad 110-15IBR. The catalog lists 4 files for it: 3 BIOS files, 1 schematic and 1 EC firmware image.
Revisions seen in file names: 1.0 and 0.1. ODM project name: CG420. The earliest file dates from March 2019 (BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics).
BIOS dumps 3
Schematics 1
Board facts
| Board number | NM-A805 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-A |
| ODM project | CG420 |
| Revisions | 1.0, 0.1 |
| Graphics | UMA (integrated) |
| First seen | 2019-03-13 |
| 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-A805
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 |
|---|---|---|
| .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
Who designed the NM-A805 board?
NM-A805 is an LCFC board number used by Lenovo.
Is there a boardview for NM-A805?
No boardview has been indexed for NM-A805 yet; the schematic is available on this page.
Which laptops use the NM-A805 board?
Files in the catalog link NM-A805 to the Lenovo IdeaPad 110-15IBR.
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.