LA-H331P – Dell XPS 15 7590
LA-H331P is the Compal main board used in the Dell XPS 15 7590, Dell 5540, Dell Precision 5540 and Dell XPS 15 9575. The catalog lists 9 files for it: 7 BIOS files, 1 schematic and 1 boardview.
Revisions seen in file names: 1.0 and 0.2. The BIOS dumps are 32 MB images. ODM project names: EDP51 and EDB51. First posted in April 2021 in BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics.
BIOS dumps 7
Schematics 1
Boardviews 1
From the uploader
EDP51 EDB51 LA-H331P REV 1.0(A00) 2019-07-19 i7-9850H
DELL 5540 EDP51 EDB51 LA-H331P REV 1.0(A00) 2019-07-19 N19P-Q3-A1 TESTED OK
Board facts
| Board number | LA-H331P |
|---|---|
| Designed by | Compal |
| Platform group | LA-H |
| ODM project | EDP51, EDB51 |
| Revisions | 1.0, 0.2 |
| BIOS chip size | 32 MB |
| Flash chip | W25Q256 |
| CPU generation | Intel 9th gen |
| First seen | 2021-04-28 |
| Source channels | BIOS Archive, Schematics & Boardviews Archive, Cyberlan Electronics |
| About the number | Compal board numbers start with LA- for main boards and LS- for daughter boards. |
Laptops that use LA-H331P
- Dell XPS 15 7590
- Dell 5540
- Dell Precision 5540
- Dell XPS 15 9575
- Dell XPS V181
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 |
| .pcb | .pcb board file | FlexBV or the viewer it was exported from |
| PDF schematic | any PDF reader; Sumatra PDF and Foxit handle large schematics well | |
| .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 LA-H331P board?
LA-H331P is a Compal board number used by Dell.
What BIOS chip size does LA-H331P use?
The BIOS images for LA-H331P are 32 MB. Flash chips named in the files: W25Q256.
Is there a boardview for LA-H331P?
Yes, 1 boardview file in .bdv and .pcb format.
Which laptops use the LA-H331P board?
Files in the catalog link LA-H331P to the Dell XPS 15 7590, Dell 5540, Dell Precision 5540, Dell XPS 15 9575 and Dell XPS V181.
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.