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例16:康佳F2109彩电,不能接收L段节目。分析与检修:该机采用飞利浦TDA电路。检查该机的高频头电压,在自动搜索时,无L段电压,查遍与L段电压有关的电路,未发现异常,检查微处理器始终无L波段组合电压输出,怀疑存储器中与波段有关的数据出错。将遥控器的外壳拆开,将内部集成电路PCA
Example 16: Konka F2109 color TV, can not receive the L section of the program. Analysis and maintenance: The aircraft uses Philips TDA circuit. Check the machine’s high-frequency voltage, automatic search, no L voltage, search through the L-phase voltage circuit, found no abnormalities, check the microprocessor is always no combination of L-band voltage output, the suspect memory and band Something wrong with the data. Disassemble the housing of the remote control and place the internal integrated circuit PCA