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| Ref Des | Description | Value / Part Number | Package | Qty | | :--- | :--- | :--- | :--- | :--- | | U1 | Switching Regulator | OM-PSU-24V | SMD-8 | 1 | | U2 | Timer Controller IC | LAE-TIMER-ASIC | SOP-16 | 1 | | K1 | Power Relay | SPDT 5A 250VAC | Through-Hole | 1 | | VR1 | Trimmer Potentiometer | 1M Ohm | 3296W | 1 | | RV1 | Metal Oxide Varistor | 275V 10mm | Disc | 1 | | Q1 | NPN Transistor | 2N2222A | TO-92 | 1 | | C1 | Electrolytic Capacitor | 47uF 400V | Radial | 1 |
How to Read and Utilize the LAE791P Schematic Diagram Effectively
Available in both UMA (Unified Memory Architecture using integrated Intel HD Graphics) and DIS (Discrete GPU, often AMD or NVIDIA) configurations. Primary Power Rails
Verify that the EC chip receives its +3.3V clock signal and power supply. 5. Tips for Reading the Verified Schematic lae791p rev 20 schematic diagram verified
The LA-E791P architecture relies heavily on an Intel platform, typically supporting 6th, 7th, or 8th Generation Intel Core processors (Sky Lake, Kaby Lake, or Kaby Lake Refresh) integrated alongside an onboard Platform Controller Hub (PCH) in a System-on-Chip (SoC) configuration. Key Specifications: Intel Kaby Lake / Skylake U-Processor Platform
| | SCHEMATIC DIAGRAM - VERIFIED | | :--- | :--- | | Part Number: | LAE791P | | Revision: | 20 | | Document ID: | SCH-LAE791P-020 | | Status: | RELEASED / VERIFIED |
Symptom : Fan spins at maximum speed, power LED lights up, but there is no display (Black Screen). 4. Step-by-Step Diagnostic Protocol Using the Schematic | Ref Des | Description | Value /
By following this guide, you will avoid the frustration of incorrect or outdated information, making your repair process faster and more reliable.
3. Netlist / Connectivity • All power pins of MCU connected to +3.3 V net. • UART_RX left floating – tied to GND via 47 kΩ (added TP‑UART_RX).
In many online repositories and repair forums, schematics are often user-uploaded scans or reverse-drawn diagrams that may contain errors. A “verified” schematic has undergone a formal or crowd-sourced validation process. Verification typically involves: Tips for Reading the Verified Schematic The LA-E791P
The primary DC-in voltage coming from the power adapter charger port, distributed across the board through the first and second isolation MOSFETs.
For those interested in accessing the verified LAE791P Rev 2.0 schematic diagram, several resources are available:
) power rails are the last to turn on. The schematic will show the PWM controllers for these stages. Troubleshooting Common Faults using the LA-E791P Schematic Check the input mosfets ( ≈19Vis approximately equal to 19 cap V 3.3V3.3 cap V standby rail, and the BIOS chip supply voltage ( 3.3V3.3 cap V on Pin 8).
A community-driven forum where technicians often share verified dumps and schematics.
| Specification | Detail | | :--- | :--- | | | LA-H791P | | Board Revisions | Rev 2.0, Rev 20 (variant) | | Manufacturer | Compal (ODM for Acer) | | Primary Application | Acer Aspire A317-51G, Extensa EX215-51G/EX215-51K | | CPU Support | Intel Comet Lake Generation | | Memory Type | DDR4 | | Schematic Format | PDF file, 57 pages total | | Associated Files | BoardView file available |