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(2)从保护执行电路采取措施,解除保护状态断开微处理器IC001待机控制端18脚外围的R020,切断微处理器的待机控制高电平,强行进入开机状态。根据开机后的故障现象,判断故障范围,对相关电路进行检修。此方法由于微处理器仍处于待机状态,可能发生无光栅、无图像等故障现象,但可对电源和行输出电路的电压,进行测量。三、保护电路维修实例[例1]索尼KV—K29MFl,开机后有几秒钟伴音、
(2) Take measures from the protection execution circuit to release the protection state. Disconnect the microprocessor IC001 R020 from the standby control pin 18 feet to cut off the standby control high level of the microprocessor and force it into the power-on state. According to the phenomenon of boot failure, determine the scope of the fault, the relevant circuit maintenance. This method because the microprocessor is still in standby state, there may be no grating, no images and other symptoms, but the power supply and the output voltage of the circuit to be measured. Third, the protection circuit repair example [Example 1] Sony KV-K29MFl, boot a few seconds after the sound,