Next time you encounter a dead 10203-1 board, don’t toss it. Download the blueprint, power up your soldering iron, and bring it back to life.
Lenovo V560 10203-1 LA56 MB 48.4JW06.011 bios + EC - ChinaFix 10203-1 la56 mb 48.4jw06.011 schematic
Using the schematic, locate the first DC-DC converter. Look for +B+ (main battery voltage) or PWR_SRC . Probe the drain of the first isolation MOSFET (e.g., PQ101 ). You should see adapter voltage (19V). Next time you encounter a dead 10203-1 board,
If the side USB ports fail, check the flexible flat cable (FFC) connecting the daughterboard to the mainboard. Schematic and Repair Resources Look for +B+ (main battery voltage) or PWR_SRC
Validated BIOS and EC dumps for this board are available on sites like
Just let me know what type of content you actually need — repair guide, component list, or educational summary.
Available in both UMA (Integrated Intel HD) and Discrete (NVIDIA GeForce) configurations.