| Section | Key ICs / Rails | Typical Voltages | | :--- | :--- | :--- | | | PQ30, PQ31 (MOSFETs), PU2 (BQ24735) | 19V → 19V_CHG | | System Rails | +3VALWP, +5VALWP (PU5 – TPS51225) | 3.3V, 5V always | | CPU Core | PU8, PU9 (NCP6132 or ISL95833) | Vcore: 0.8–1.2V | | PCH (Chipset) | +1.05V, +1.5V, +1.8V | Various LDOs | | RAM | +1.35V (DDR3L) or +1.5V | From PU6 | | EC (KBC) | MEC16 or MEC14xx | 3.3V, 3.3V_AUX |
. Key areas to check based on community repair logs include: Primary Power Stage: la-e801p rev 2.0 schematic
Before diving into the schematic, you must understand the board's layout. The LA-E801P is an Intel-based board, typically paired with: | Section | Key ICs / Rails |
2.0 (Commonly documented as Rev 1.0, but Rev 2.0 shares significant architecture) Application: HP 15-BS Notebook series Power Architecture & Components Key Components Mapped in the Schematic for most
: 2.0 (dated approximately late 2016 to early 2017). Key Components Mapped in the Schematic
for most power rails and signal paths, as the core engineering remain similar Key Technical Details Motherboard Model: Compal CSL50 / CSL52 Common Applications: Primarily found in laptop series Major Components: Intel Kabylake/Skylake (often U-series) Dual-channel DDR4 slots Integrated UMA or Discrete GPU options Common Repair Points
The "Rev 2.0" designation is critical. Dell and Compal (the OEM manufacturer) released multiple revisions of this board. A schematic for Rev 1.0 may have different resistor values, missing test points, or altered power rails compared to Rev 2.0. Always ensure your schematic matches the revision printed directly on the PCB.