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This is a circuit diagram module from the earphone socket on the TV board. Why should the four and five pins in the picture be short-circuited to ground?
Garen Posté sur October 7, 2020
Will it be current detection? When grounding is detected, the IC stops outputting.
Davide Posté sur October 7, 2020
But it’s better to read the specification
Feliciano Posté sur October 7, 2020
I have read it. The specifications I found only have descriptions of the pin technology, but no functional descriptions.
Evita Posté sur October 7, 2020
It should be to prevent noise. When the earphone is plugged in, pins 4 and 5 automatically bounce off. After being pulled out, it should be grounded, which should be better than floating.
