1.0 Boardview: La-c701p Rev

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 . La-c701p Rev 1.0 Boardview

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

The LA-C701P Rev 1.0 (also known as the AHL50/ABL52) is a motherboard manufactured by Compal Electronics for HP laptops, including the HP 15-AC, 15-AY, and HP 250 G4 series. It typically features an Intel Broadwell ULV processor and supports DDR3L RAM. Available Documentation

You can find the schematic and boardview files through the following technical resources:

Schematic and Boardview Files: Complete documentation including engineering drawings and component layouts is available on platforms like Scribd (Document 887667660) and Scribd (Document 465941934). The LA-C701P (Rev 1

Technical Archive: Community-driven archives on Telegram (schematicslaptop) often host the .rar or .zip files containing the boardview (usually in .CAD, .BRD, or .BDV format) and the 61-page schematic PDF.

Bios & EC Firmware: If you are performing a chip-level repair, ChinaFix provides the BIOS and EC dumps specific to this revision. Repair Benchmarks

For common "No Power" or "Not Charging" issues on this board, technicians often check these critical power rails first: 19V / B+ Rail: The main power entry point.

3V/5V Standby: Check for missing LDO (Low Dropout) voltages if the board is dead.

RTC Section: Verify the RTC cell voltage and its path through the diode. schematics|boardviews| ARCHIVE – Telegram

5.2 "Lid Close" Sensor Issues

Symptom: Screen does not turn on, but external monitor works; or board believes lid is closed.
Location: Hall sensor (magnetic sensor) located near the hinge area. The Boardview reveals its location (often labeled HALL1 or similar) and the signal trace (LID_SW#) going to the EC.

3. Power Distribution Subsystems

The power delivery network is the most critical aspect for diagnostic purposes on the La-C701p. The board uses a multi-rail architecture typical of modern laptops.

1. Introduction

The La-C701p is a mobile motherboard platform utilizing the Intel Skylake/Kaby Lake architecture. As a mainstream laptop motherboard, it balances performance and power efficiency, featuring support for 6th and 7th Generation Intel Core processors (BGA1356 socket) and a dedicated NVIDIA GeForce 940MX GPU.

The "Boardview" file (typically files with extensions like .bdv, .asc, or .brd) is an essential tool for hardware engineers. It maps the physical location of components to their schematic net names, allowing for rapid diagnosis of short circuits, open traces, and signal integrity issues. This paper dissects the board's layout based on such data. Symptom: Screen does not turn on, but external

3. Basic Navigation

Once you load the La-c701p file into your viewer:

Pan: Click and drag (or Arrow keys).
Zoom: Mouse scroll wheel.
Search: Usually Ctrl + F. This is the most important function.
Layers: You can toggle viewing the Top side or Bottom side of the board.

Navigating the Power Maze: A Deep Dive into the LA-C701P Rev 1.0 Boardview

In the world of modern laptop motherboard repair, a schematic is the map, but the Boardview file is the GPS. For anyone working on the notorious LA-C701P Rev 1.0 board—commonly found in gaming laptops from major brands like Dell (Alienware) or Compal—having the correct boardview file isn't just helpful; it's essential for survival.

If you have struggled to locate a shorted capacitor, trace a missing voltage line, or identify a mysterious "QFN" chip on this specific revision, this guide will walk you through what the LA-C701P Rev 1.0 boardview is and how to use it effectively.

Part 2: Boardview vs. Schematic – What’s the Difference?

Many beginners confuse the two. Here’s the distinction:

The LA-C701P Rev 1.0 Boardview shows you exactly where R1302 is located, which pin of PU801 connects to PL401, and which side of a dual-diode faces the edge of the board.

Pro Tip: Always use the schematic AND the boardview together. The schematic tells you what to check; the boardview tells you where to put your multimeter probe.

4. Understanding the Labels

When you hover over a component, you will see codes. Here is how to read them for the La-c701p:

Reference Designator (The "Name"):
- Rxxx: Resistor (e.g., R123).
- Cxxx: Capacitor (e.g., C456).
- Uxxx: Integrated Circuit/Chip (e.g., U12 is usually the KBC/EC).
- Lxxx: Inductor/Coil.
- Qxxx: Mosfet/Transistor.
- Jxxx: Connector (e.g., JDC1 is the DC Jack).
- PCxxx: Power Connector.
Part Numbers:
- The software may show the manufacturer part number (e.g., RT8206B or NPCE285). This is crucial for replacing chips.

Practical uses for the boardview

Fault diagnosis: locating shorted rails, identifying failed MOSFETs or blown fuses, and tracing signal faults from symptom (no power, no display, charging failure) to root cause.
Repair and part replacement: pinning down component designators and values so technicians can order or cannibalize replacements. Boardviews often show replacement part footprints and polarity, minimizing guesswork.
Firmware recovery and reprogramming: identifying SPI flash and EC programming pads for unbricking or updating BIOS/EC firmware.
Modding and hardware hacking: repurposing available rails, tapping debug UART for console access, or adapting alternate components when originals are obsolete.
Documentation and training: teaching students or junior technicians how laptop subsystems interconnect and how to systematically debug failures.