La-g851p Schematic High Quality -

The is a printed circuit board (PCB) reference code used by Compal (a major ODM for HP). This schematic is essential for diagnosing power issues, component-level repair, and understanding signal flow on the motherboard.

| Page | Component / Section | IC / Part Number | Notes | |------|---------------------|------------------|-------| | 1 | Block Diagram | -- | Overall power/clock/reset flow | | 4 | Embedded Controller | IT8987E (KB9022 compatible) | ROM-less; EC firmware is in SPI flash | | 8 | PCH (SR30W / SR3EB) | Intel Kaby Lake-H | +1.0V_VCCPCH, +1.8V_VCCPCH | | 10 | CPU Core VR | PU901: NCP81215 | DrMOS (NCP81252) for phases | | 20 | DDR4 RAM | VDDQ = 1.2V, VPP = 2.5V, VTT = 0.6V | PU1001: RT8230A | | 28 | GPU VR | PU701: NCP81276 | 3-phase for GTX 1050/Ti | | 34 | Audio Codec | ALC3246 | Headset jack & internal speakers | | 40 | USB Type-C / PD (if present) | TPS65982 or similar | Not present on all LA-G851P variants | la-g851p schematic

Detail on how voltage travels from the USB-C charging port through various buck converters to power the CPU, RAM, and other peripherals. Signal Communication: The is a printed circuit board (PCB) reference

The Dell Chromebook 3100 Service Manual provides disassembly instructions. VPP = 2.5V