If you download a file for the NM-C561 and it is only 200KB, it is likely a Boardview (CAD drawing). If it is 2MB+, it might be a PDF Schematic. If it is a .exe file – delete it immediately – it is malware targeting repair shops.
The most helpful aspect of the schematic for DIYers is the pinout. These packs usually feature a proprietary connector. However, the layout is almost always consistent with standard "slider" style packs.
Standard Pin Configuration (Top View):
| Pin Position | Function | Wire Color (Typical) | Description | | :--- | :--- | :--- | :--- | | 1 (Outer Edge) | Positive (+) | Red | Main Power Output | | 2 | N/C or Thermal | White/Blue | Often unused or connected to an internal NTC thermistor. | | 3 | ID / Signal | Yellow/Green | Sometimes used for tool identification or fuel gauge. | | 4 (Outer Edge) | Negative (-) | Black | Main Ground |
Note: If your specific module is a "slide-on" style for Parkside tools, there is often a "T" (Thermistor) pin. This pin connects to a 10k NTC thermistor inside the pack. If you are bypassing the original charger, you generally do not need to use this pin for power.
The GS44B, GS54B, and NM-C561 are standard 5S Li-Ion battery assemblies. While official printed schematics are rare, their internal topology gs44b gs54b nm-c561 schematic
The GS44B / GS54B (NM-C561) schematic and boardview are essential technical documents for repairing the Lenovo IdeaPad S145-15IKB
laptop motherboard. These files provide a detailed roadmap of the motherboard's architecture, including its Intel Kaby Lake (KBL-U) CPU, DDR4 memory, and optional Nvidia discrete graphics. Technical Specifications Overview
The NM-C561 motherboard is an OEM design by LCFC and typically includes the following core components as seen in its block diagrams: Processor: Intel KBL-U22/U42 series. Memory: Standard DDR4 SODIMM slots.
Graphics: Options for UMA (Integrated) or DIS (Discrete) using Nvidia N16S-GTR (MX130) or N17S-G1 (MX110).
I/O Support: SATA, USB, HDMI, Audio, LAN, and WLAN interfaces. Key Troubleshooting Use Cases If you download a file for the NM-C561
Technicians often use the schematic and boardview together to diagnose common hardware failures:
Numpad Failure: A known logic-based issue on the NM-C561 board where the numpad stops working due to "Board ID" logic errors. This cannot be fixed by replacing the keyboard or IO chip without understanding the schematic logic.
Power Rail Issues: Schematics are used to trace the 19V primary power rail and identify shorted components, such as MOSFETs (e.g., near Jumper PJ 5301) or power ICs.
Boardview Visualization: The NM-C561 Boardview allows for precise physical location of tiny capacitors, resistors, and test points that are otherwise difficult to find on the PCB. Where to Find Schematics
You can access these technical documents through several specialized repositories: NM-C561 REV 1.0 BOARDVIEW Lenovo S145-15IKB The GS44B, GS54B, and NM-C561 are standard 5S
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Working with Lithium-Ion schematics carries risk. These batteries contain high energy density.
The "brains" of the schematic is the BMS board. It is a small PCB tucked inside the casing. It performs three critical functions: