Based on the filename format, "LA-E791P Rev 2.0" refers to the motherboard schematic for a specific model of Acer Aspire E15 (likely the E5-571 or E5-531 series) or a similar Acer laptop generation using the Intel Bay Trail platform.
Component Values: Essential for identifying charred resistors or blown capacitors. La-e791p Rev 2.0 Schematic Diagram
Use a PDF viewer with search and layer toggling if available. Many repair communities provide boardviews (.BRD) alongside the schematic, allowing component location on the physical PCB. Based on the filename format, "LA-E791P Rev 2
| Rail | Name | Source | Enables Next | |------|------|--------|----------------| | +3VLP | Always-on RTC | Battery/DC | SIO_RTC | | +3V_L | Deep Sleep | Linear Reg (PU201) | +3V_L -> EC_VCC | | +5V_ALW | Always on 5V | PU401 (TPS51285) | +5V_ALW -> +3V_ALW | | +3V_ALW | Always on 3V | PU402 (RT8239A) | EC_PWRBTN# | | +VDD_CORE | Vcore CPU | PU501 (RT8239B) | VR_READY | | +VDD_SOC | SoC/GPU | PU601 (SY8288) | ALL_SYS_PWRGD | Many repair communities provide boardviews (
Rev 2.0 enhancement: The EC’s +3.3V_RTC backup circuit now includes a larger supercapacitor (0.22F vs 0.1F in Rev 1.0), allowing RTC retention for up to 72 hours instead of 24.