The La-e791p follows a but with HP-specific SIO enabling.
Before diving deep into the schematic pages, it is crucial to understand the architecture of the board. The LA-E791P is a highly integrated System-on-Chip (SoC) platform.
When searching for "LA-E791P Rev 2.0 Schematic Diagram," look for archives that include both the .pdf and a .brd file viewable with OpenBoardView or Allegro Free Physical Viewer. La-e791p Rev 2.0 Schematic Diagram
Powers USB sleep charging and auxiliary standby circuits. 3. Run and Suspend Rails
Master Guide to the Compal LA-E791P Rev 2.0 Motherboard Schematic Diagram The La-e791p follows a but with HP-specific SIO enabling
You can find full engineering drawings and boardviews on technical archives for repair purposes: : High-level LA-E791P Schematic Overview CSL50 Detailed Diagrams Telegram Archives : Technicians often share schematic and boardview files in .rar format for granular circuit tracking. Repair Communities : Groups like the Facebook Laptop BIOS community
You can find the full schematic and boardview files through the following technical repositories: When searching for "LA-E791P Rev 2
Power enters from the DC jack and passes through protection reverse-polarity MOSFETs ( PQ1 and PQ2 or equivalent depending on exact schematics).
| Feature | La-e791p Rev 2.0 | Typical HP (LA-CxxxP) | Typical Lenovo (NM-Bxxx) | |---------|----------------|----------------------|---------------------------| | | Yes (dedicated phase) | Shared with VCore | Yes | | RTC supercap | 0.22F | 0.1F | 0.047F | | DrMOS type | Renesas ISL99380 | TI CSD95410 | ON Semi FDMF3170 | | EC firmware recoverable | Yes (via ECPD) | No (requires SPI programmer) | Yes (via KBC) |
As documented in the Rev 1.0/2.0 notes, this board often houses AMD graphics with dedicated VRAM. The schematic provides paths for the GPU power rails, which only activate when high-performance graphics are required.