Lenovo S145-15IKB (NM-C561) Не включается - VlaB.su
A common symptom of corrupted firmware on this board is or a power LED that turns on for 5 seconds and then turns off. Reflashing the Main BIOS chip (often an 8MB or 16MB SPI Flash) and the EC chip using a hardware programmer frequently resolves this. 4. CPU/SoC Core Short Circuit
The motherboard's base project code is , while GS44B and GS54B are the specific silkscreen model numbers printed directly on the PCB, used interchangeably in technical documentation. gs44b gs54b nm-c561 schematic
[DC-In Jack] ---> [Reverse Polarity MOSFETs] ---> [VIN / B+ (19V Rail)] │ ┌───────────────────┬───────────────────────────┴─────────────────────┐ ▼ ▼ ▼ [3V/5V Regulator] [RAM PWM Regulator] [CPU/GPU Core PWM] (3.3V & 5V Always) (1.2V / 0.6V) (VCC_CORE / VCC_SOC) The Charging Circuit & B+ Rail
Check if the IC is receiving its main VIN power input. Next, verify the EN (Enable) signal coming from the EC or a resistor divider network. If the IC has input power and enable signals but no output, check the resistance to ground on the output inductors to rule out a short-circuit before replacing the regulator IC. Issue C: Laptop Turns On but No Display (Black Screen) Lenovo S145-15IKB (NM-C561) Не включается - VlaB
While the schematic tells you how components connect electrically, a Boardview file (.CAD or .BRD) tells you where those microscopic components are physically located on the PCB.
1x M.2 NVMe PCIe SSD slot and 1x SATA 2.5" HDD/SSD connector. CPU/SoC Core Short Circuit The motherboard's base project
If you are experiencing issues, remember that the NM-C561 board often suffers from BIOS corruption and cold solder joints on the power delivery ICs. A multimeter paired with this schematic will quickly guide you to the failing voltage regulator or shorted capacitor. Always double-check the board revision number ( REV 1.0 ) printed on the physical PCB before flashing a BIOS or ordering a replacement component found in the schematics.
A boardview file (usually in .brd or .cad format) that allows you to click on a component to see all its connected traces.
Typically centered around an Intersil/Renesas or Texas Instruments charging IC (e.g., ISL88739 or BQ series), controlling DC-in jack power and battery charging. 3. Core Power Rails and Voltage Distribution