La-c701p Rev 1.0 Boardview _verified_ -
To diagnose a dead LA-C701P board, you must trace the primary power generation steps. The power system initializes in a strict hierarchical order:
: Locate the Super I/O chip layout using your boardview software. Verify that the chip's power supply pins read a steady 3.3V and check that critical standby signals—such as PM_SLP_SUS# —properly switch logic states when you press the power button.
Using the schematic, you find that +3V_PCH is generated by two specific MOSFETs, such as 2N7002 and AO3413L . You now know what component you need to test.
Measure the voltage on the current sensing resistor (). If you do not read 19V here, check the gate voltage of the input MOSFETs driven by the charging IC. Phase 2: Testing Always-On Standby Rails (+3VALW / +5VALW)
It reveals every single pin for integrated circuits (ICs), Super I/O chips, and the CPU socket. 📊 Technical Specifications of the LA-C701P Motherboard La-c701p Rev 1.0 Boardview
A notorious issue with the Compal LA-C701P platform involves failure in the RTC reset line ( RTCRST# ), which halts the power sequence before the CPU wakes up. Search the boardview for the diode .
Compal LA-C701P Rev 1.0 (also known as AHL50/ABL52) is a critical reference for repairing 5th Generation Intel Broadwell-based HP 15 series laptops. Repair technicians generally consider this boardview essential due to the complex power sequencing issues common to this model. Key Technical Specifications
Locate (or the designated EC chip identifier) on the Boardview. Measure the VCC pins to ensure the chip is receiving 3.3V.
To view the LA-C701P Rev 1.0 boardview data, you need dedicated viewer applications. The standard formats for these files are .BDV , .BRD , or .CAD . To diagnose a dead LA-C701P board, you must
By cross-referencing the boardview with the schematic, you can diagnose the most common failures found on the LA-C701P motherboard.
ISL88731C or similar Intersil/Renesas SMBus battery charger.
When an LA-C701P board suffers from a state, use this diagnostic sequence combined with your boardview file:
Many modern Compal boards omit printed labels (like "R123" or "C456") on the physical PCB to save space. The Boardview provides instant identification. Using the schematic, you find that +3V_PCH is
It helps locate hidden SMD components around large ICs like the KBC (Keyboard Controller) or the PCH (Platform Controller Hub).
ENE KB9022Q or similar 128-pin LQFP chip.
What is the motherboard showing (e.g., completely dead, blinking LED codes, fan spins but no display)?
If you are using the Boardview for a real repair, keep these common failure points in mind for this specific revision: Power Rails: generated by the TPS51225RDCR (PU100). Charging Circuit: