导读:(1)切断主电源,总线“数据”变化为哪般? (2) 有关“空白”存储器的概念。 (3) 总线彩电的存储器可以“拿掉”吗? (4) 从电源指示灯的工作状态,快速划定故障范围。 1.长虹H25K66(LA76810+CHT0410,长虹CN-12机心)彩电,“二次”不开机分析与检修:测开关电源输出正常,待机指示灯亮,用遥控器或本机键“二次”开机,机器不动作。由于无该机的电路图,所以经验性地测到了微处理器 REVIEW: (1) cut off the main power, the bus “data ” change to what? (2) the concept of “blank ” memory. (3) Can the bus color TV’s memory be “taken away”? (4) Quickly define the fault range from the working status of the power indicator. 1. Changhong H25K66 (LA76810 + CHT0410, Changhong CN-12 movement) color TV, “second ” does not boot Analysis and Maintenance: test switch power output is normal, the standby indicator light, with the remote control or the local key Times "boot, the machine does not move. As there is no circuit diagram of the machine, so the microprocessor was measured empirically