LA-B291P – Lenovo B50-45
The LA-B291P (Compal) motherboard is found in the Lenovo B50-45, Lenovo 20380, Lenovo 45 and Lenovo B50. ChambersDesignInc.com has indexed 8 files for this board — 5 BIOS files, 1 schematic, 2 boardviews and 1 EC firmware image.
Revisions seen in file names: 1.0. The earliest file dates from June 2018 (BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics).
BIOS dumps 5
Schematics 1
Boardviews 2
From the uploader
APU: AMD E1-Series E1-6010 (EM6010IUJ23JB)
KBC: NPEC288NA0DX
BIOS: QH64-104HIP
Lenovo B50-45
amd E1-6010
ZAWBA-BB LA-B291P
REV 1.0
2014-03-12
U1
LENOVO N50-45 LA-B291P
ZAWBA ZAWBB
2014/03/13
REV: 1.0
Board facts
| Board number | LA-B291P |
|---|---|
| Designed by | Compal |
| Platform group | LA-B |
| Revisions | 1.0 |
| First seen | 2018-06-23 |
| Source channels | BIOS Archive, Schematics & Boardviews Archive, Cyberlan Electronics, Boardview Schematics |
| About the number | Compal board numbers start with LA- for main boards and LS- for daughter boards. |
Laptops that use LA-B291P
- Lenovo B50-45
- Lenovo 20380
- Lenovo 45
- Lenovo B50
- Lenovo N50-45
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 |
| .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 LA-B291P?
Yes, 2 boardview files in .bdv format.
Which laptops use the LA-B291P board?
Files in the catalog link LA-B291P to the Lenovo B50-45, Lenovo 20380, Lenovo 45, Lenovo B50 and Lenovo N50-45.
Who designed the LA-B291P board?
LA-B291P is a Compal 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.