The is a motherboard manufactured by Compal for the HP 15-BA , 15-AF , and 255 G5 laptop series . It is designed around the AMD platform , specifically supporting A-series (A6, A8, A10) and E-series processors. Core Specifications
| Specification | Details | |---------------|---------| | Board Model | LA-D711P | | Revision | 3.0 | | Form Factor | LGA1151 / Mobile | | CPU Support | Intel Whiskey Lake / Comet Lake-U (typically i3-8145U, i5-8265U) | | PCH | Intel Integrated (Low Power Encore) | | Memory | 2x DDR4 SODIMM slots | | Graphics | UHD Graphics 620 (iGPU) |
| Component | IC Part | Location | Function | |-----------|---------|----------|----------| | PU4601 | SY8288B | Near DIMM slots | DDR4 +1.2V | | PU4801 | SY8286C | Near PCH | +1.05V PCH/VCCSA | | PU4701 | NCP81215 | Near CPU | VCC_CORE (2-phase) | | PU4702 | NCP81215 | Near CPU | VCC_GT | | PU5001 | TPS51285B | Near DC jack | +5V_ALW / +3.3V_ALW | Bdl51 La-d711p Rev 3.0 Schematic
This is the most painful fault. Using the schematic, you will find the resistance to ground on the VCC_CORE coil (usually PL902 or PL903). If it reads (dead short), the CPU is likely dead. The Rev 3.0 uses direct-soldered CPUs. Unfortunately, 90% of the time this is unrepairable without a BGA rework station and a donor CPU.
Often paired with the schematic, these firmware files are available for Rev 3.0 at sites like Indiafix and Laptex . The is a motherboard manufactured by Compal for
The "Rev 3.0" marking indicates that this is the third major revision of the printed circuit board (PCB). In the lifecycle of industrial electronics, Revision 3.0 usually represents a "mature" product.
Before opening the PDF, you should understand the architecture of the . The power flow generally follows Intel’s standard时序 (Timing Sequence). Using the schematic, you will find the resistance
The is a system-on-chip (SoC) based laptop motherboard schematic designed by Compal for Dell (often found in the Inspiron 15 3000 or Vostro 3000 series). This document provides a technical breakdown of the power delivery, chipset architecture, and key test points for troubleshooting and repair.
Dual DDR3L or DDR4 SODIMM slots (depending on the specific sub-model configuration). Graphics: Integrated AMD Radeon R-Series graphics.
. While a full downloadable schematic "essay" does not exist in a traditional academic sense, the technical documentation for this board serves as a blueprint for repair and diagnostics. Technical Profile of the LA-D711P The LA-D711P is an