: Stands for Positive Plane . This indicates a power line or "rail" that carries a specific voltage across the board.
: Likely stands for Low Voltage . It differentiates this rail from high-voltage lines (like those for a backlight) or standard logic levels. PP LV Jmp4
AI responses may include mistakes. Learn more : Stands for Positive Plane
: If there is a short circuit, a tech might "blow" or remove this jumper to see if the short is on the "upstream" side (the power source) or the "downstream" side (the components consuming power). It differentiates this rail from high-voltage lines (like
If you are looking at this on a board or a schematic (like a BRD file or PDF), it usually serves one of two purposes:
: Technicians use these jumpers to measure if a specific power rail is "present" (e.g., checking for 1.2V or 3.3V) without having to probe tiny component legs.