LA-A891P – Dell Latitude E5250
LA-A891P is the Compal main board used in the Dell Latitude E5250. 7 files are indexed for this board: 3 BIOS files, 2 schematics and 3 boardviews.
Revisions seen in file names: 1.0. The BIOS dumps are 4 MB and 8 MB images. ODM project name: ZAM60. First posted in September 2021 in Schematics & Boardviews Archive, BIOS Archive and Cyberlan Electronics.
BIOS dumps 3
Schematics 2
Boardviews 2
From the uploader
DELL Latitude E5250 ZAM60 LA-A891P Rev 1.0 (A00) 2014-07-16 4MB& 8MB WORKIG BIOS 100%
DELL Latitude E5250 ZAM60 LA-A891P Rev 1.0 (A00) 2014-07-16 4MB& 8MB WORKIG BIOS 100%
DISPLY OKOKOK
FAST BOOT OKOKOK
FAN SPEED OKOK
Board facts
| Board number | LA-A891P |
|---|---|
| Designed by | Compal |
| Platform group | LA-A |
| ODM project | ZAM60 |
| Revisions | 1.0 |
| BIOS chip size | 4 MB, 8 MB |
| CPU generation | Intel 4th gen |
| Graphics | UMA (integrated) |
| First seen | 2021-09-13 |
| Source channels | Schematics & Boardviews Archive, BIOS Archive, Cyberlan Electronics |
| About the number | Compal board numbers start with LA- for main boards and LS- for daughter boards. |
Laptops that use LA-A891P
- Dell Latitude E5250
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 |
|---|---|---|
| .7z | 7-Zip archive | 7-Zip or WinRAR |
| .bdv | Honhan .bdv boardview | OpenBoardView, FlexBV or Honhan BoardViewer |
| .brd | .brd boardview (Test_Link format) | OpenBoardView, FlexBV or BoardViewer |
| .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 |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
Questions
Who designed the LA-A891P board?
LA-A891P is a Compal board number used by Dell.
Is there a boardview for LA-A891P?
Yes, 3 boardview files in .bdv, .brd and .cad format.
What BIOS chip size does LA-A891P use?
The BIOS images for LA-A891P are 4 MB and 8 MB.
Which laptops use the LA-A891P board?
Files in the catalog link LA-A891P to the Dell Latitude E5250.
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.