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机型:索尼SLV-X50DH故障现象:多功能显示屏上除有两个小圆点亮以外,其他无任何显示,所有功能键均失效,插入磁带盒时机器无反应。分析检修:任何录像机插上电源后,不论开关是否开启,整个时钟符号0:00均应显示,该机器仅显示0:00中间的两个小圆点,说明显示屏驱动有故障,其驱动部件为定时微处理器IC_(001);大多数录像机的电源控制是这样的:由“POWER ON/OFF”键与定时操作微机共同产生控制信号,然后将该信号通过数据线传输给系统控制电路,再由系统控制微机产生相应的控制电平并送入电源电路,而X50录像机电源
Model: Sony SLV-X50DH Symptom: In addition to two multi-function display on the small round of the light, the other without any display, all function keys are invalid, the machine inserted into the cassette no response. Analysis and maintenance: any video recorder plugged in, regardless of whether the switch is turned on, the entire clock symbol 0:00 should be displayed, the machine shows only two dots in the middle of 0:00, indicating that the display driver is faulty, the drive components Is the timing microprocessor IC_ (001). Most of the VCR’s power control is as follows: The “POWER ON / OFF” key and the timing operation microcomputer generate the control signal, which is then transmitted to the system control via the data line Circuit, and then by the system control microcomputer to generate the appropriate control level and into the power circuit, and X50 recorder power