If a drink was spilled on the keyboard, the schematic helps you find which tiny capacitors are shorted to ground in the affected area.
Always remove the battery and AC adapter before probing the motherboard with a multimeter to avoid accidental shorts. la-g121p schematic
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 If a drink was spilled on the keyboard,
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. This shows how the CPU connects to the
When you open the PDF for the LA-G121P, there are a few pages you will likely visit more than others: 1. The Block Diagram (The Map)
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 .
Modern motherboards are multi-layered puzzles. Without a schematic, you are essentially guessing. The LA-G121P schematic provides: