ACER SWIFT 1 SF114-31 OXFORD2 PREMP BUILD 20160824-GERBER2 Schematic, Boardview & Laptop Motherboard Repair Guide

Welcome to geniusmind4u.blogspot.com, the premier resource for professional chip-level repair technicians. Today, we are focusing on the ACER SWIFT 1 SF114-31 featuring the OXFORD2 PREMP BUILD motherboard architecture. This platform, typically powered by Intel Braswell or Apollo Lake SOCs, requires precision diagnostic techniques due to its highly integrated design. Whether you are dealing with a 'No Power' state, liquid damage, or BIOS corruption, the following technical guide and provided schematic/boardview files are essential for a successful logic board restoration.

Motherboard Specifications

Feature	Details
Laptop Brand & Model	Acer Swift 1 SF114-31
Motherboard Code	OXFORD2 PREMP BUILD 20160824-GERBER2
Platform/CPU Architecture	Intel Braswell / Apollo Lake SOC
EC/KBC Controller	ITE IT8987E or Equivalent
Primary Power Rails	VIN (19V), +3VALW, +5VALW, +VCC_CORE

Common Chip-Level Faults & Diagnostic Notes

• 1) 19V DC-IN & Current Sense Resistor (PR301/VIN) Diagnosis: If the board is completely dead, start by measuring the voltage at the main current sense resistor (PR301). If 19V is missing, inspect the first and second input MOSFETs (PQ301/PQ302). Ensure the Charging IC (often a BQ series) is generating the ACDRV signal to open these gates. A short to ground on the VIN rail is often caused by a ceramic capacitor or a high-side MOSFET failure.
• 2) 3.3V / 5V Standby Rail & PWM Buck Controller Troubleshooting: These rails must be present before the power button is pressed. Locate the Always-On (ALW) controller. Verify the Enable (EN) signals and the LDO outputs (VREG3/VREG5). If the +3VALW is missing, check for a shorted Embedded Controller (EC) or a faulty PWM IC. Use a thermal camera or 'rosin method' to identify overheating components on these lines.
• 3) Power-On Sequence & BIOS/EC Firmware Corruption: If standby rails are present but the laptop won't trigger, verify the RSMRST# signal (3.3V) from the EC to the SOC. If the power LED blinks but there is no display, the SPI Flash BIOS or EC firmware may be corrupted. Always backup the original dump and try a 'Clear ME Region' firmware to resolve slow boot or fan-spinning-but-no-display issues.

Free Schematic / Boardview Download

📥 Download ACER SWIFT 1 SF114-31 OXFORD2 PREMP BUILD 20160824-GERBER2 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