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由于I~2C总线彩电主控电路微处理器和被控电路之间采用双向信息传输,故微处理器可根据被控电路的应答信号和I~2C总线系统的通信情况对被控电路进行检查,当被控电路应答信号不正常或I~2C总线系统传输发生故障时,微处理器会作出被控电路发生故障的判断,并将检测结果存储到存储器中。当电视机进入保护状态时,可通过指示灯显示故障信息,如果屏幕显示正常,可进入自检状态,通过屏
As I ~ 2C bus color TV main circuit microprocessor and the controlled circuit between the use of two-way information transmission, so the microprocessor can be controlled circuit response signal and I ~ 2C bus communication system to check the circuit under control , When the controlled circuit response signal is not normal or I ~ 2C bus system transmission failure, the microprocessor will be made to judge the circuit fault, and the test results stored in memory. When the TV into the protected state, the fault indicator can be displayed by the light, if the screen shows normal, can enter the self-test state, through the screen