对于这个问题的解决方法，可以用视频电缆没有接好或接错，对照接线图重新连接收听的是广播节目，切换到电视节目。
For the problem, can use video cable not connected or faulty wiring and compared to reconnect listening to radio programs, switch to the TV program.
对照控制箱电气原理图、端子接线图，用电缆按对应的线号把控制箱和电动装置的端子连接起来。 。
Connect the terminals on the control cabinet with those of the electric actuator by the cable as perelectric schematic diagram and terminal wiring diagram of control cabinet.
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