La-c701p Rev 1.0 Boardview __full__ (DELUXE — SUMMARY)
[Connect Bench Power Supply] │ ▼ [Check Current Draw] ───► High Amperage? (Short on 19V Main Rail) │ ▼ Low/Normal Standby Draw (~0.01A) [Measure +3.3V_ALW & +5V_ALW Inductors] ───► Missing? ───► Check Standby IC │ ▼ Present [Check Power Button Signal on EC Pin] ───► Drops to 0V when pressed? ───► If no, check button/flex │ ▼ Yes [Check RAM & CPU Voltage Rails] ───► Missing? ───► Check Enable signals on PWM Controller
Motherboards are multi-layered. If a copper trace burns out inside an inner layer of the PCB, the Boardview tool highlights all pins and test points connected to that specific net, allowing you to run a jumper wire safely. La-c701p Rev 1.0 Boardview
If you are facing a dead LA-C701P Rev 1.0 board, follow this standard diagnostic routine using your software tools: [Connect Bench Power Supply] │ ▼ [Check Current
: Use the boardview to safely locate the source, gate, and drain pads of the two primary DC-in MOSFETs. If the gates fail to receive their required turn-on bias voltage from the charging IC, the main power rail (+19V) will stay isolated, disabling the laptop entirely. 2. Always-On Standby Power Supply (+3.3VALW / +5VALW) ───► If no, check button/flex │ ▼ Yes
With the power completely disconnected, switch your multimeter to resistance mode (Ohms). Locate the large inductors/coils using the boardview (e.g., PL302 for 3.3V, PL303 for 5V, PL701 for CPU). Measure their resistance to a ground point. A reading below 10 Ohms on the 3.3V/5V coils indicates a severe short circuit.
The software will immediately highlight the exact location of that tiny black IC on the motherboard. It will also show you which pins correspond to the source, gate, and drain. Without the boardview, finding a tiny IC on a modern motherboard can be like finding a needle in a haystack.
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.
