LA-J891P
The LA-J891P board comes from Compal. 12 files are indexed for this board: 7 BIOS files, 2 schematics, 3 boardviews and 3 EC firmware images.
Revisions seen in file names: 1B, 1A and 0.1. First posted in December 2021 in BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics.
BIOS dumps 7
Schematics 2
Boardviews 3
From the uploader
ACER Nitro 5 AN515-55 FH52M LA-J891P REV 1B i5-10300H VGA N18E-G1-B-KA-A1 UH2
Board facts
| Board number | LA-J891P |
|---|---|
| Designed by | Compal |
| Platform group | LA-J |
| Revisions | 1B, 1A, 0.1 |
| GPU | GTX 1660 TI, RTX 2060 |
| CPU generation | Intel 10th gen |
| Graphics | discrete GPU |
| First seen | 2021-12-01 |
| 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. |
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 |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
Questions
Is there a boardview for LA-J891P?
Yes, 3 boardview files in .bdv format.
Who designed the LA-J891P board?
LA-J891P is a Compal board number used by Acer.
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.