The (often referred to by its full part number, Compal CDM70 LA-G121P ) is the internal model name for the motherboard found in various configurations of the Dell Latitude 5480 .
Always remove the battery and AC adapter before probing the motherboard with a multimeter to avoid accidental shorts.
Are you currently troubleshooting a or a display problem with this specific motherboard model? la-g121p schematic
If your power brick light goes out when you plug it in, you have a short on the main 19V rail ( B+ ). The schematic helps you isolate which power stage (CPU, GPU, or WiFi) is pulling the voltage down.
It shows exactly how 19V from the DC jack is stepped down to 5V, 3.3V, and eventually the tiny voltages required by the CPU and RAM. The (often referred to by its full part
Understanding the Dell Latitude 5480 Motherboard: A Deep Dive into the LA-G121P Schematic
If you are a laptop repair technician or a hardware enthusiast, you know that having the right documentation is the difference between a quick fix and a paperweight. When dealing with the Dell Latitude 5480 (specifically the versions equipped with 7th or 8th Gen Intel processors and discrete graphics), the is the "holy grail" of diagnostic tools. If your power brick light goes out when
The first few pages usually contain the block diagram. This shows how the CPU connects to the PCH (Platform Controller Hub), the RAM slots, the GPU, and the I/O ports. If you have a dead USB port or no display, the block diagram tells you which controller chip is responsible. 2. The Power Sequence Logic