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If the remote control distance of the anti-theft system is too close or the remote control does not work at all, it should be considered whether there is a fault in the remote receiver circuit. The commonly used methods to determine whether the remote control receiver is working properly are as follows.

The TV remote control is mainly composed of a microprocessor chip, crystal oscillator, amplifying transistor, infrared light-emitting diode, and keyboard matrix that form the remote control signal. The working principle is as follows