19793-1 – Lenovo LC55-14A
19793-1 is the Wistron main board used in the Lenovo LC55-14A. 5 files are indexed for this board: 4 BIOS files and 1 schematic.
Revisions seen in file names: 1.0. First posted in April 2021 in BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics.
BIOS dumps 4
Schematics 1
Board facts
| Board number | 19793-1 |
|---|---|
| Designed by | Wistron |
| Platform group | 19XXX |
| Also known as | 448.0K103.0011, 448.0K103.001M |
| Revisions | 1.0 |
| First seen | 2021-04-10 |
| Source channels | BIOS Archive, Schematics & Boardviews Archive, Cyberlan Electronics |
| About the number | Wistron board numbers look like 15217-1; the first two digits usually indicate the design year. |
Laptops that use 19793-1
- Lenovo LC55-14A
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.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| 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
Is there a boardview for 19793-1?
No boardview has been indexed for 19793-1 yet; the schematic is available on this page.
Which laptops use the 19793-1 board?
Files in the catalog link 19793-1 to the Lenovo LC55-14A.
Who designed the 19793-1 board?
19793-1 is a Wistron board number used by Lenovo.
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.