: Available in both UMA (Integrated) and Discrete (R17M-M1-30 or R17M-M2-50) configurations using PCIe 3.0 (8Gb/s). Power Rails : Main input: 19V . System rails: 3.3V and 5V (Always-on). DDR Power: 1.2V . Common Issues & Repair Insights
Because the LA-E801P is a widely used, popular consumer board, you can often find its schematics and (which allow you to see the exact location of components on the board) via the following methods:
This level of logical deduction is impossible without the schematic. la-e801p rev 2.0 schematic
Before connecting any power, configure your digital multimeter to (or Continuity Mode). Measure the resistance relative to the system ground at the large physical inductors (coils) across the board:
Since these documents are proprietary to Compal and Dell, they are typically found on specialized technician forums and database sites: : Available in both UMA (Integrated) and Discrete
The master reset signal must be high to pull the controller out of its reset loop state. 5. Boardview vs. Schematic Layout
The LA-E801P architecture relies on a highly integrated system-on-chip (SoC) design, typically accommodating Intel 6th, 7th, or 8th Generation Core processors (Skylake, Kaby Lake, or Kaby Lake R U-processor lines). Key Hardware Specifications: DDR Power: 1
One of the most valuable aspects of analyzing the LA-E801P Rev 2.0 schematic is identifying the main PWM chip. While variants exist, this board frequently utilizes a highly integrated controller that handles both the power factor correction (PFC) and the main DC-to-DC conversion.
It typically supports DDR4 memory and utilizes a soldered Intel SoC (System on Chip), meaning the processor and chipset are unified. Key Components in the Schematic
Based on common repair logs for this board, the voltage converter (designated PU1001 ) is responsible for generating the 1V PLL supply for the CPU. A common failure on Rev 2.0 boards is a short circuit on the VIN pin of this chip, which prevents the 3.3V and 5V rails from appearing.