//free\\ | Lac701p Rev 10 Boardview Patched
If the internal LDO of the regulator fails, technicians may "patch" the circuit by injecting an external 3.3V/5V signal to the (Enable) pins to jumpstart the power sequence. Visual Check: The boardview identifies the exact vias for the signal, allowing for precise soldering of jumper wires. C. Discrete to UMA Conversion
: Available in both UMA (Integrated) and Discrete (Nvidia N16V-GM-S) configurations. Controller : Uses the NPCE285P B2 EC/KBC chip. Common Faults and Troubleshooting with Boardview Technicians often use the LA-C701P boardview to resolve specific documented failures: 1. The "No Power" / RTC Section Failure
You’ll likely need to:
A is a file that has been modified, corrected, and verified by experienced repair technicians. Errors in the netlist are fixed, mislabeled power rails are renamed to match the official schematic, and the file format is optimized for stability in universal viewers. Common Failures on the LA-C701P and How to Diagnose Them lac701p rev 10 boardview patched
Connect the motherboard to a bench power supply with a current display. Note the current draw. Open your patched boardview file alongside the schematic PDF. Locate the DC-in jack interface connector on the boardview to trace the 19V input rail through the first and second protection MOSFETs. Step 2: Trace the Missing Signal or Rail
The LA-C701P motherboard (typically found in Lenovo Ideapad 300 series laptops) is a staple on the workbenches of component-level repair technicians. When diagnosing a dead board, short circuit, or missing voltage rail, a is indispensable. However, standard boardview releases often suffer from missing netnames, misaligned pins, or unrouted layers.
Measure the resistance to ground at the Current Sense Resistor (usually labeled PR301 or similar near the DC-in MOSFETs). If the internal LDO of the regulator fails,
Schematic & Boardview Guide: Fix and Modify the LAC701P Rev 1.0 Laptop Motherboard
For technicians and chip-level repair engineers, the Go to product viewer dialog for this item. motherboard—commonly found in laptops like the , Latitude 3560 Go to product viewer dialog for this item.
Requires flashing the main BIOS IC and EC (Embedded Controller) chip. Discrete to UMA Conversion : Available in both
version is the key to executing board-level repairs efficiently.
Do you have access to a and a bench power supply ?