论文部分内容阅读
例1:科诺F80B复读机,按下“放音”键后机心不转动,液晶显示屏上也无正常的秒计数显示,只显示(----)。分析与检修:根据经验,判断机器的CPU没有正常工作的可能性较大。而造成CPU工作不正常的情况又以晶振损坏居多,首先更换3.58MHz晶振,更换后故障依旧。进一步检查机器供电电压,当按下“放音”
Example 1: Kono F80B Repeater, press the “playback” button after the movement does not rotate the LCD screen there is no normal seconds count display, only the display (----). Analysis and Maintenance: According to experience, to determine the machine’s CPU is not likely to work properly. And caused the CPU to work abnormally to the majority of damage to the crystal oscillator, the first replacement 3.58MHz crystal oscillator, replacement failure still. Further check the machine supply voltage, when you press the “playback”