LA-9901P – Lenovo G400S
LA-9901P is the Compal main board used in the Lenovo G400S and Lenovo G400S-G500S. 7 files are indexed for this board: 3 BIOS files, 2 schematics and 2 boardviews.
Revisions seen in file names: 1.0. ODM project name: VILG1. First posted in January 2018 in Schematics & Boardviews Archive, BIOS Archive and Cyberlan Electronics.
BIOS dumps 3
Schematics 2
Boardviews 2
Board facts
| Board number | LA-9901P |
|---|---|
| Designed by | Compal |
| Platform group | LA-9 |
| ODM project | VILG1 |
| Revisions | 1.0 |
| Graphics | discrete GPU |
| First seen | 2018-01-18 |
| Source channels | Schematics & Boardviews Archive, BIOS Archive, Cyberlan Electronics, Laptop & Desktop BIOS Files |
| About the number | Compal board numbers start with LA- for main boards and LS- for daughter boards. |
Laptops that use LA-9901P
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
Which laptops use the LA-9901P board?
Files in the catalog link LA-9901P to the Lenovo G400S and Lenovo G400S-G500S.
Is there a boardview for LA-9901P?
Yes, 2 boardview files in .bdv format.
Who designed the LA-9901P board?
LA-9901P 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.