Welcome to the definitive technical resource for the ACER ONE L1410, featuring the NSBW140X REV B1 motherboard. This guide is curated for professional chip-level repair technicians who require precision data for troubleshooting power rail failures, signal timing issues, and component-level faults. Understanding the SoC-based architecture of this board is essential for efficient diagnosis and repair.
Motherboard Specifications
| Specification | Details |
|---|---|
| Laptop Brand & Model | Acer One L1410 Series |
| Motherboard Code | NSBW140X REV B1 |
| Platform/CPU Architecture | Intel Braswell / Cherry Trail SoC |
| EC/KBC Controller | ITE IT8987E or equivalent |
| Primary Power Rails | VIN (12V/19V), +3VALW, +5VALW, +1.0V_Core |
Common Chip-Level Faults & Diagnostic Notes
- 19V DC-IN & Current Sense Resistor (PR301/VIN) Short-Circuit: If the laptop is completely dead with no LEDs, check for a low resistance to ground at the main current sense resistor (PR301). Common culprits include ceramic decoupling capacitors (MLCC) on the VIN rail or the high-side MOSFETs of the CPU/RAM buck converters. Use a DC power supply with current limiting for thermal imaging or the "finger test" to locate the shorted component.
- 3.3V / 5V Standby Rail & PWM Buck Controller: The NSBW140X board relies on a stable Always-On (ALW) state. If +3VALW or +5VALW is missing, verify the enable (EN) signals and VREG LDO outputs from the PWM IC. Often, a faulty EC/KBC chip or a shorted USB port protection diode can pull these rails down, preventing the system from entering the S5 power state.
- Power-On Sequence & BIOS/EC Firmware: If the power button triggers a light but no display, monitor the RSMRST# and PM_SLP_S3# signals. Corruption in the SPI Flash (BIOS) is common on this model. Ensure you use a verified dump and, if necessary, clear the Intel ME (Management Engine) region to resolve slow boot or intermittent shutdown issues.
Free Schematic / Boardview Download
📥 Download ACER ONE L1410 (NSBW140X REV B1) Schematic / Boardview
Direct file link. Verified clean archive.
Need Additional Repair Assistance?
Explore our technician resources:
- 🛠️ Diagnose No-Power & Short-Circuit faults step-by-step: Interactive Laptop Diagnostic Lab
- 🛒 Original Replacement Motherboards & IC Components: Official Spare Parts Mega Store
