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故障现象:通电后,荧光显示屏无显示,控制失效,也无开机画面开盖观察激光头在开机后也无任何动作,其现象与整机无供电造成的现象相同,故应首先检查各电路的供电电路。经查供电无问题。由于本机显示屏驱动电路的显示数据信号由解压板提供,怀疑解压板不工作,常见原因是系统时钟振荡或复位电路不良,应重点检查解压板的时钟振荡电路和复位电路。
Symptom: After power, the fluorescent display no display, control failure, there is no boot screen open lid observation laser head after boot without any action, the phenomenon of the same machine without power supply the same phenomenon, it should first check the circuit The power supply circuit. After checking the power supply no problem. Since the display signal of the local display driver circuit is provided by the decompression board, it is suspected that the decompression board does not work. The common reason is that the system clock oscillates or the reset circuit is not good. You should check the clock oscillation circuit and reset circuit of the decompression board emphatically.