DABLBMB28A0 – Toshiba Satellite L705
The DABLBMB28A0 (Quanta) motherboard is found in the Toshiba Satellite L705, Toshiba Satellite L750, Toshiba Satellite L750-22L and Toshiba Satellite L755. 4 files are indexed for this board: 3 BIOS files, 1 schematic and 1 EC firmware image.
File names mention revision A or 1A. First posted in March 2018 in Schematics & Boardviews Archive, Cyberlan Electronics and BIOS Files.
BIOS dumps 3
Schematics 1
Board facts
| Board number | DABLBMB28A0 |
|---|---|
| Designed by | Quanta |
| Platform group | BLB |
| Also known as | Quanta BLBD |
| Revisions | A, 1A |
| Graphics | discrete GPU |
| First seen | 2018-03-28 |
| Source channels | Schematics & Boardviews Archive, Cyberlan Electronics, BIOS Files, Laptop & Desktop BIOS Files |
| About the number | Quanta board numbers follow the pattern DA + project code + MB + suffix, where the second-to-last letter is the PCB revision. |
Laptops that use DABLBMB28A0
- Toshiba Satellite L705
- Toshiba Satellite L750
- Toshiba Satellite L750-22L
- Toshiba Satellite L755
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.
EC (embedded controller) firmware runs the keyboard controller, power sequencing, battery charging and fans. Depending on the board it lives in a separate chip (ENE KB9012, ITE IT85xx, Nuvoton NPCE) or inside the main SPI image, so check which applies before flashing.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| .7z | 7-Zip archive | 7-Zip or WinRAR |
| 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
Who designed the DABLBMB28A0 board?
DABLBMB28A0 is a Quanta board number used by Toshiba.
Which laptops use the DABLBMB28A0 board?
Files in the catalog link DABLBMB28A0 to the Toshiba Satellite L705, Toshiba Satellite L750, Toshiba Satellite L750-22L and Toshiba Satellite L755.
Is there a boardview for DABLBMB28A0?
No boardview has been indexed for DABLBMB28A0 yet; the schematic is available on this page.
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.