LA-9912P – Lenovo IdeaPad G505
LA-9912P is the Compal main board used in the Lenovo IdeaPad G505 and Lenovo G405. ChambersDesignInc.com has indexed 12 files for this board — 8 BIOS files, 2 schematics, 1 boardview and 2 EC firmware images.
File names mention revision 1.0. BIOS images are 4 MB. First posted in January 2017 in BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics.
BIOS dumps 8
Schematics 2
Boardviews 1
EC / KBC firmware 1
From the uploader
VAWGAGB LA-9912P Rev 1.0 2013-03-29.rar
VAWGA/GB LA-9912P Rev : 1.0 2013-03-29
ENE KBC9012QF
EFEON W25Q32FVSSIG(U56)
Board facts
| Board number | LA-9912P |
|---|---|
| Designed by | Compal |
| Platform group | LA-9 |
| Revisions | 1.0 |
| BIOS chip size | 4 MB |
| Flash chip | 25Q32FV, W25Q32FVSSIG |
| EC / KBC chip | KB9012, KB9012QF |
| Graphics | discrete GPU |
| First seen | 2017-01-26 |
| 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-9912P
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
What BIOS chip size does LA-9912P use?
The BIOS images for LA-9912P are 4 MB. Flash chips named in the files: 25Q32FV and W25Q32FVSSIG.
Is there a boardview for LA-9912P?
Yes, 1 boardview file in .bdv format.
Who designed the LA-9912P board?
LA-9912P is a Compal board number used by Lenovo.
Which laptops use the LA-9912P board?
Files in the catalog link LA-9912P to the Lenovo IdeaPad G505 and Lenovo G405.
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.