文档介绍：遥控器的维修(Remote maintenance)
Remote control maintenance (2007-11-02 10:56:04) Tags: knowledge / exploration
There are mating at radio 0.
meters, press any key, the radio "Da" sound; repeat button, heard the "Da”, "Da”, "Da" sound, indicating remote oscillation and keyboard circuit is normal, but can not explain the quality of the infrared emission tube. If you press the button without the above phenomenon, then indicate that the remote control is certainly not working properly.
Measurement method: when pressing the remote control as a key, the multimeter is used to measure the signal of the remote control receiving window in the color motor, and the output voltage is varied by 0. l~0. 3V, or the remote control signal input terminal of an internal master CPU chip, the range of voltage change is 0. 25~0. 4V indicates basic reception and emission operation.
、 current method: remote control using integrated circuit, although there are many models, but its work current is similar, we can measure the remote control of the work current, quickly determine the fault. The remote control does not press any key when the static current should be less than 1 microamps, individual models should also be less than 3 a dynamic current: press the button when the 4-8mA, remote indicator, indicator lamp current of about 2mA according to the current size, determine the fault position, as follows: