Since this board charges via USB-C, the PD Controller (often a TPS series chip) frequently fails. The schematic helps identify the CC1/CC2 lines and the 20V input rail.
Any help or guidance would be greatly appreciated.
Technicians working on the LA-E801P Rev 2.0 frequently report a few common failure points. When analyzing the schematic, make sure to cross-reference these sections first: The Input Protection Circuit
Pressing the power button sends a low-pulse signal ( ON/OFF# ) to the EC. la-e801p rev 2.0 schematic
The primary rails to test, in chronological order of their activation, include: VIN (19V Main Power Rail)
The KB9022 Embedded Controller initializes, reads its firmware, and asserts EC_RST# .
Generated right after passing through the input protection MOSFETs (typically dual N-channel transistors like the PE642DT ). This acts as the main high-voltage highway that feeds all buck converters on the board. Since this board charges via USB-C, the PD
: Uses a 19V DC input rail, managed by a series of MOSFETs and PWM controllers to generate the 3.3V/5V "always-on" rails. Critical Components & Troubleshooting
: Governed by a memory controller chip (such as the G5616B PWM IC on PUM1) to power DDR4 modules. : Multi-phase buck regulators that scale from
The Compal LA-E801P (often paired with board name C5V01) is a widely deployed laptop motherboard found in various Acer Aspire and TravelMate series laptops, most notably the Acer Aspire A315-51 and A315-53 series. For component-level repair technicians, system engineers, and electronics hobbyists, having access to the and boardview is essential for diagnosing complex hardware failures. Technicians working on the LA-E801P Rev 2
If 19V is present but +3VALW is missing, check the 3V/5V standby IC. Feel if the IC is getting hot. A short circuit on the +3VALW line (often a dead EC or shorted PCH) will pull this rail to ground, causing the regulator to overheat.
Tracking broken power paths, calculating expected node values, identifying components.
LA-E801P Rev 2.0 schematic is a critical document for repairing HP 15-BS series laptops, which use the Compal CSL50/CSL52 motherboard architecture
Unified Memory Architecture (UMA) using integrated Intel HD Graphics, or configured with a Dedicated Graphics chip (AMD Radeon variant depending on the BOM option).
The LA-E801P is built around the Intel processor series (7th Gen). Because this is a 2-in-1 convertible, the board is designed to handle frequent shifts in orientation, meaning the hinge and sensor connectors are critical points of failure often documented in the schematic. Key Components: CPU: Intel Core i3/i5/i7 (Soldered BGA). RAM: LPDDR3 (On-board, typically non-upgradable).