La-c701p Rev 1.0 Boardview 【95% QUICK】
The LA-C701P Rev 1.0 is a motherboard designed by Compal Electronics for several HP laptop series, including the HP Pavilion 15-AC , 15-AY , and 250 G4/G5 . While often referred to in technical circles by its part number or "AHL50/ABL52" designation, it serves as a critical mid-range platform supporting 4th and 5th Generation Intel Core processors. Architectural Overview The board is built on the Intel Broadwell ULV (Ultra Low Voltage) architecture, prioritizing energy efficiency for thin-and-light laptop designs. Processor: Integrated Intel Core i3, i5, or i7 processors (BGA-mounted), typically from the 5th Gen family (e.g., i5-5200U). Memory: Two DDR3L SO-DIMM slots supporting up to 16 GB of 1600MHz RAM. Graphics: Available in both UMA (integrated Intel HD graphics) and Discrete configurations, with some variants featuring the AMD Radeon R5 M330 GPU. Connectivity: Includes SATA 3.0 for storage, HDMI for high-definition output, and Mini-PCIe slots for wireless cards. Common Repair and Troubleshooting The LA-C701P is a frequent subject in component-level repair discussions due to its widespread use in consumer HP laptops. No Power Issues: One of the most documented failures involves the 3.3V and 5V regulators , which can prevent the system from triggering even if power is present at the DC jack. Low Load Scenarios: Technicians often observe a "low load" state where the motherboard remains in a suspended mode (load approx. 0.042A) and fails to complete the power-on sequence. Diagnostic Tools: Professional repair requires the LA-C701P Boardview and Schematic Document to trace signals like SYS_PWROK and test critical voltage points on the power rail. Summary Table: Core Specifications Specification Chipset Intel Broadwell CPU Compatibility 4th/5th Gen Intel (ULV) RAM Dual Slot DDR3L (Max 16GB) I/O Ports USB 3.0, USB 2.0, HDMI, Ethernet Common Uses HP 15-AY, 15-AC, 250 G4, 250 G5
The LA-C701P (Rev 1.0) is a motherboard manufactured by Compal Electronics , primarily used in HP 15 series laptops . It is a Broadwell-based platform designed for ULV (Ultra Low Voltage) processors and is frequently paired with discrete AMD graphics . Board Specifications Processor Support : Intel Broadwell ULV (1168P BGA) . Memory : Two DDR3L SO-DIMM slots supporting dual-channel DDR3L at 1600MHz (1.35V) . Graphics : Integrated Intel graphics via the processor. Discrete GPU option: AMD EXO-Pro M330 with VRAM via PCIe x4 . Storage & Connectivity : SATA : One SATA 3.0 port for a 2.5" HDD and one for an ODD . Display : Supports eDP (embedded DisplayPort) for internal panels and features transmitters for LVDS and VGA output . USB : Integrated USB 3.0 support . Technical Resources Finding the Boardview and Schematic is essential for component-level repair, such as troubleshooting power sequences or identifying shorted capacitors. Schematic Details : The full schematic consists of approximately 61 pages of engineering drawings covering power signals, signal rail configurations, and component layouts . Where to Access : Scribd : Multiple versions of the LA-C701P Boardview and Schematic are hosted here, though they may require a subscription to download . Telegram Archives : Technical groups such as Schematics/Boardviews Archive often host the .rar files (AHL50/ABL52 LA-C701P) for free download by technicians . Video Walkthroughs : Visual guides for the LA-C701P Rev 1.0 schematic can help identify specific power rails during live repairs . Troubleshooting Common Issues Technicians typically use the boardview alongside a DC Power Supply and Multimeter to check for: Power Sequence : Verifying that the Broadwell processor receives all necessary voltage rails in the correct order . Shorts on Main Rails : Common on the 19V primary rail or secondary rails like +3VS and +5VS. BIOS Corruption : Identifying the BIOS chip for flashing when the board fails to POST. schematics|boardviews| ARCHIVE – Telegram
LA-C701P Rev 1.0 — Detailed Guide Overview The LA-C701P Rev 1.0 is a laptop motherboard (commonly found in some Clevo/other OEM notebooks). This guide covers identification, board layout, common components, diagnostic points, common faults, repair tips, and test points. Identification
Label: LA-C701P Rev 1.0 printed on PCB. Typical form factor: slim laptop motherboard with edge I/O (USB, HDMI, Ethernet), DC jack area, RAM slots (soldered or SO-DIMM), CPU socket or BGA, and storage connectors (M.2/SATA). Look for white silkscreen reference designators (e.g., Uxxx, Cxxx, Rxxx, Lxxx) and printed test pads. La-c701p Rev 1.0 Boardview
Major functional zones (typical)
DC-in & power jack area — input protection, charging circuit. VRM / CPU power delivery — multiple MOSFETs, inductors (L), driver ICs, large capacitors. CPU/GPU (BGA) area — often center with thermal pad. RAM slots / SO-DIMM area. BIOS/EC (SPI flash / EC chip) — small SOIC, usually near power button circuitry. Southbridge / chipset area — SATA, USB controllers. Audio & Codec area — near audio jacks. Wireless module slot (M.2) and antennas. Display connector and HDMI connector. CMOS battery and RTC circuitry.
Important chips & components to know
EC (embedded controller) — handles keyboard, battery charging, power button. BIOS/UEFI flash (SPI) — often 8‑pin SOIC or QFN. PCH / Southbridge — large IC near SATA/USB area. PMIC / VRM controllers — multi-phase buck controllers for CPU/GPU rails. MOSFETs and inductors — power switching. VRAM/CPU BGA — not user-replaceable without reballing. DC-in jack & charging IC — common failure point. Battery connector and charger sense resistors.
Common faults & symptom mapping
No power / no LED:
Check DC jack, adapter voltage, fuse (polyfuse), input MOSFET, charging IC, and EC. Test power button circuit and power-on MOSFETs.
Powers on but no POST / black screen: