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故障现象:开机图像、声音都正常。但调面板按键及遥控器都不能改变当前的图像。也就是说,面控、遥控失去一切作用。但让该机继续工作30分钟后,无论面控、遥控都正常。笔者检修了三台这样的病机,可谓该机的“通病”。分析与检修:刚开机时能保留上次关机前的数据(如音量、色度、亮度等),并且工作半小时后又能正常控制,说明微处理器IC001(M34300N4—012SP)损坏的可能性不大。刚开机能保留前次参数,这证明面板某
Symptom: boot image, the sound is normal. However, the front panel keys and remote control can not change the current image. In other words, face control, remote control lost all its role. But let the aircraft continue to work for 30 minutes, regardless of surface control, remote control are normal. I overhaul the three such pathogenesis, described the machine’s “common problem.” Analysis and Overhaul: The data (such as volume, chroma, brightness, etc.) of the previous shutdown can be retained just after powering on, and can be normally controlled after half an hour working, indicating the possibility of damage to the microprocessor IC001 (M34300N4-012SP) Not big. Just boot up to retain the previous parameter, which proves the panel somewhere