LA-L931P – Lenovo ThinkBook 15 G4
LA-L931P is the Compal main board used in the Lenovo ThinkBook 15 G4 and Lenovo ThinkBook 14 G4. 6 files are indexed for this board: 3 BIOS files, 1 schematic and 2 boardviews.
File names mention revision 1A or 1.0. BIOS images are 32 MB. ODM project name: HLXA4. First posted in November 2023 in BIOS Archive, Cyberlan Electronics and Schematics & Boardviews Archive.
BIOS dumps 3
Schematics 1
Boardviews 2
Board facts
| Board number | LA-L931P |
|---|---|
| Designed by | Compal |
| Platform group | LA-L |
| ODM project | HLXA4 |
| Revisions | 1A, 1.0 |
| BIOS chip size | 32 MB |
| First seen | 2023-11-08 |
| Source channels | BIOS Archive, Cyberlan Electronics, Schematics & Boardviews Archive, Boardview Schematics |
| About the number | Compal board numbers start with LA- for main boards and LS- for daughter boards. |
Laptops that use LA-L931P
- Lenovo ThinkBook 15 G4
- Lenovo ThinkBook 14 G4
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 |
|---|---|---|
| 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 LA-L931P?
Yes, 2 boardview files.
What BIOS chip size does LA-L931P use?
The BIOS images for LA-L931P are 32 MB.
Who designed the LA-L931P board?
LA-L931P is a Compal board number used by Lenovo.
Which laptops use the LA-L931P board?
Files in the catalog link LA-L931P to the Lenovo ThinkBook 15 G4 and Lenovo ThinkBook 14 G4.
Are these files free?
2 of the posts are marked VIP or paid in their source channel; the others are ordinary posts. ChambersDesignInc.com does not host or sell files.
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.