LA-A971P – Dell Latitude E7250
LA-A971P is the Compal main board used in the Dell Latitude E7250, Dell 7250 and Dell Latitude E5450. The catalog lists 10 files for it: 6 BIOS files, 2 schematics and 2 boardviews.
Revisions seen in file names: 1.0 and 0.3. The BIOS dumps are 4 MB and 8 MB images. ODM project name: ZBZ00. The earliest file dates from December 2018 (BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics).
BIOS dumps 6
Schematics 2
Boardviews 2
Board facts
| Board number | LA-A971P |
|---|---|
| Designed by | Compal |
| Platform group | LA-A |
| ODM project | ZBZ00 |
| Revisions | 1.0, 0.3 |
| BIOS chip size | 4 MB, 8 MB |
| EC / KBC chip | MEC5085 |
| First seen | 2018-12-12 |
| 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-A971P
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 |
| .bin | raw SPI flash image | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
| .cad | .cad boardview | FlexBV, OpenBoardView or 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 |
Questions
Which laptops use the LA-A971P board?
Files in the catalog link LA-A971P to the Dell Latitude E7250, Dell 7250 and Dell Latitude E5450.
Who designed the LA-A971P board?
LA-A971P is a Compal board number used by Dell.
Is there a boardview for LA-A971P?
Yes, 2 boardview files in .bdv and .cad format.
What BIOS chip size does LA-A971P use?
The BIOS images for LA-A971P are 4 MB and 8 MB.
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.