LA-D121P – Acer Aspire ES1-520
The Acer Aspire ES1-520, Acer Aspire ES1-521, Acer Aspire ES1-522 and Acer Aspire 521ES1-522 are built on the LA-D121P board designed by Compal. 12 files are indexed for this board: 9 BIOS files, 3 schematics and 1 boardview.
Revisions seen in file names: 1.0. BIOS images are 8 MB. First posted in April 2018 in BIOS Archive, Cyberlan Electronics and Schematics & Boardviews Archive.
BIOS dumps 9
Schematics 2
Boardviews 1
From the uploader
B5W1E LA-D121P REV:1.0
Winbond 25q64fv
KB9022Q
Board facts
| Board number | LA-D121P |
|---|---|
| Designed by | Compal |
| Platform group | LA-D |
| Revisions | 1.0 |
| BIOS chip size | 8 MB |
| Flash chip | 25Q64FV |
| First seen | 2018-04-17 |
| Source channels | BIOS Archive, Cyberlan Electronics, Schematics & Boardviews Archive, 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-D121P
- Acer Aspire ES1-520
- Acer Aspire ES1-521
- Acer Aspire ES1-522
- Acer Aspire 521ES1-522
- Acer Aspire ES1-520ES1
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 |
| 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
Is there a boardview for LA-D121P?
Yes, 1 boardview file in .bdv format.
Who designed the LA-D121P board?
LA-D121P is a Compal board number used by Acer.
What BIOS chip size does LA-D121P use?
The BIOS images for LA-D121P are 8 MB. Flash chips named in the files: 25Q64FV.
Which laptops use the LA-D121P board?
Files in the catalog link LA-D121P to the Acer Aspire ES1-520, Acer Aspire ES1-521, Acer Aspire ES1-522, Acer Aspire 521ES1-522 and Acer Aspire ES1-520ES1.
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.