Use the search function (Ctrl+F) in your PDF reader to follow signals like S5_ENABLE or PM_SLP_S3# across different pages.
: Replacement boards are still widely available through international marketplaces like AliExpress and eBay , making it a viable DIY repair project for those with the right tools.
: Identifying the main BIOS and EC BIOS chips for reflashing.
Core voltage dedicated to the CPU's integrated graphics processing unit. Common Failure Points and Troubleshooting Steps 10203-1 la56 mb 48.4jw06.011 schematic
: These are the "Always-On" voltage rails. Even before you press the power button, these rails must be present to power the Super I/O chip and the BIOS ROM.
Often populated with an NVIDIA GeForce dedicated GPU (e.g., N12P-GV-S-A1) paired with dedicated VRAM chips.
Intel 2nd Generation Core i3 / i5 / i7 (Sandy Bridge, Socket G2 / rPGA988B) Chipset (PCH): Intel HM65 Express Chipset Memory Type: Dual-channel DDR3 SODIMM (Up to 16GB) Graphics Options: Integrated Intel HD Graphics 3000 Use the search function (Ctrl+F) in your PDF
10203-1 LA56 MB 48.4JW06.011 is the motherboard identifier for the Lenovo IdeaPad B560 laptop series. These boards are typically powered by the Intel HM55 chipset
The ISL6251 charging controller often fails, preventing the battery from charging even if the laptop runs on AC power.
Offers a database for LA56 boardview and schematics specifically for Lenovo B560 and Z580 models. Core voltage dedicated to the CPU's integrated graphics
Here are the core specifications for the 10203-1 platform, based on the most common configurations:
Every major power IC has a PGOOD pin. If a chip successfully regulates its target voltage, it outputs a high signal (usually 3.3V) on this pin. If one PGOOD line is pulled to ground, the Super I/O (EC) will halt the startup sequence.
When you plug in the power adapter, AD+ (approx. 19.5V) enters the board. It passes through the input protection MOSFETs to create . This is the main high-voltage highway that supplies all the buck converters on the board. Phase 2: Standby Power (3V / 5V Always-On)
| Sheet No. | Content | |-----------|---------| | 1 | Block diagram, connector pinout (CN1, CN2) | | 2 | LVDS receiver & T-Con input conditioning | | 3 | T-Con main IC (LA56) with crystal 27MHz/48MHz | | 4 | Gamma buffer (P-Gamma IC) – e.g., BUF16821 | | 5 | VCOM amplifier & temperature compensation | | 6 | DC-DC boost + charge pump (for VGH/VGL) | | 7 | Gate driver outputs (CN3, CN4 to panel) | | 8 | Source driver outputs (mini-LVDS channels) | | 9 | BOM (Bill of Materials) + test points |
You can often find these schematics or related BIOS files on specialized technical forums such as or repair communities like download link for this specific schematic, or are you trying to troubleshoot a specific problem with the board? lenovo b560 schematic • Notebook1 форум