LA-7121P – Acer 3830TG
The LA-7121P (Compal) motherboard is found in the Acer 3830TG. The catalog lists 4 files for it: 2 BIOS files, 1 schematic, 1 boardview and 1 EC firmware image.
File names mention revision 0.2 or 3.0. ODM project name: P3MJ0. First posted in June 2019 in BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics.
BIOS dumps 2
Schematics 1
Boardviews 1
Board facts
| Board number | LA-7121P |
|---|---|
| Designed by | Compal |
| Platform group | LA-7 |
| ODM project | P3MJ0 |
| Revisions | 0.2, 3.0 |
| First seen | 2019-06-22 |
| 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-7121P
- Acer 3830TG
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 |
| PDF schematic | any PDF reader; Sumatra PDF and Foxit handle large schematics well | |
| .rar | RAR archive | 7-Zip or WinRAR |
| .rom | raw BIOS ROM image | a CH341A, XGecu or RT809H programmer |
Questions
Is there a boardview for LA-7121P?
Yes, 1 boardview file in .bdv format.
Who designed the LA-7121P board?
LA-7121P is a Compal board number used by Acer.
Which laptops use the LA-7121P board?
Files in the catalog link LA-7121P to the Acer 3830TG.
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.