Dell Inspiron 3452 (Iris BSW MB 14279-1) Schematics, Boardview & BIOS

Motherboard Specifications

The Iris BSW MB 14279-1 (REV: A00) is the main logic board found in the Dell Inspiron 3452 (and often the 15-inch 3552 variant). This board is based on the highly integrated Intel Braswell (BSW) SoC architecture, meaning the CPU, GPU, and chipset are combined into a single BGA chip (typically a Celeron or Pentium processor).

Brand / Model: Dell Inspiron 3452
Board Number: Iris BSW MB 14279-1
Revision: REV: A00
Architecture: Intel Braswell (SoC)

Dell Inspiron 3452 Iris BSW 14279-1 Schematics

Common Chip-Level Faults & Repair Notes

Because the Braswell architecture is a highly integrated SoC design, troubleshooting the Dell Inspiron 3452 requires specific attention:

Dead SoC (System-on-Chip): The CPU/Chipset combo is prone to failure from thermal stress or power surges on the USB ports (since the USB controller is integrated into the SoC). If the main 3.3V/5V rails are present but there is a dead short on the CPU VCORE, the SoC must be replaced.
BIOS Corruption (No Display / 7 Beeps): Very common on Dell laptops. A corrupt BIOS or failing CMOS battery will prevent POST. Reprogramming the BIOS chip with a clean bin file is the first diagnostic step.
Power Sequence Issues: Use the provided boardview to trace the embedded controller (EC) signals (like ACIN, RSMRST#, and PWRBTN#) to verify power logic.