LA-4101P – HP Compaq CQ40
The HP Compaq CQ40, HP Pavilion CQ40, HP Pavilion CQ45 and HP Pavilion DV4 are built on the LA-4101P board designed by Compal. The catalog lists 14 files for it: 6 BIOS files, 6 schematics and 2 boardviews.
Revisions seen in file names: 1.0 and 0.3. ODM project name: JAL50. The earliest file dates from September 2017 (Schematics & Boardviews Archive, Cyberlan Electronics and BIOS Archive).
BIOS dumps 6
Schematics 6
Boardviews 2
Board facts
| Board number | LA-4101P |
|---|---|
| Designed by | Compal |
| Platform group | LA-4 |
| ODM project | JAL50 |
| Revisions | 1.0, 0.3 |
| Graphics | UMA (integrated) |
| First seen | 2017-09-04 |
| Source channels | Schematics & Boardviews Archive, Cyberlan Electronics, BIOS Archive |
| About the number | Compal board numbers start with LA- for main boards and LS- for daughter boards. |
Laptops that use LA-4101P
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 |
| .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
Which laptops use the LA-4101P board?
Files in the catalog link LA-4101P to the HP Compaq CQ40, HP Pavilion CQ40, HP Pavilion CQ45 and HP Pavilion DV4.
Who designed the LA-4101P board?
LA-4101P is a Compal board number used by HP.
Is there a boardview for LA-4101P?
Yes, 2 boardview files in .bdv, .brd and .cad format.
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.