Platform Controller Hub (PCH) integrated directly onto the CPU die (System-on-Chip / SoC).
The LA-E791P is a motherboard primarily found in popular HP consumer laptop models, such as the HP 250 G6 and HP 15-bs series. This article aggregates verified technical data, pinouts, common fault points, and the necessary steps to source the schematic and BoardView files safely.
The LA-E791P Rev 2.0 is designed around a multi-chip or system-on-chip (SoC) architecture, typically balancing power efficiency with entry-to-mid-range performance. La-e791p Rev 2.0 Schematic Diagram
The LA-E791P (often codenamed C5V01 ) is a DDR4-based motherboard typically supporting Intel Skylake or Kaby Lake processors.
The ENE KB9022Q controller initializes using the +3.3V_ALW line. When the power button is pressed, it pulls the ON/OFF# signal low. The EC senses this change and outputs PBTN_OUT# to the PCH/CPU SoC to signal a boot request. Platform Controller Hub (PCH) integrated directly onto the
Step 4: Run Rails and System Voltages ( +1.2V_VCCST , +1.0V_VCCIO , +VCC_CORE )
[Visual Inspection] âž” [Check Resistance on Main Rails] âž” [Measure DC-In Voltage] âž” [Verify 3V/5V Always-On] âž” [Check EC Signals] The LA-E791P Rev 2
ENE KB9022Q or similar chip responsible for power sequencing, keyboard interface, and thermal management.
Look for the dual MOSFETs or the PWM Controller chip (often a RT series chip like RT8223 or similar).
Understanding the is essential for technicians repairing the widely-used Go to product viewer dialog for this item. and Go to product viewer dialog for this item. series laptops. This motherboard, often labeled as the CSL50/CSL52