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故障现象一台日本光电公司产ECG—6151便携式心电图机在用充电器SB—613D为工作电源工作时,突然停止记录,键盘状态显示窗口也停止显示,改用SB—611D干电池插件作为电源该机工作正常。上述情况表明该机充电器电源SB—613D出了故障。故障检查和分析根据SB—613D电路图,SB—613D充电器供电系统有两个直流稳压电源,一个是供给主机6151工作的+12V直流稳压电源,由集成块IC801稳压后在印刷线路板插脚9输出,另一
Symptoms A Japanese photoelectric company ECG-6151 portable ECG machine working with the charger SB-613D work, suddenly stop recording, the keyboard status display window also stopped showing, use SB-611D battery plug-in as the power of the machine Working well. The above shows that the machine charger power supply SB-613D has failed. Troubleshooting and Analysis According to SB-613D circuit diagram, SB-613D charger power supply system has two DC power supply, one is the supply of the host 6151 +12 V DC power supply regulator IC801 by the regulator after the printed circuit board Pin 9 output, the other