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shu zi wan yong biao jian xiu yi li
Author(s): 
Pages: 26
Year: Issue:  6
Journal: Family Electronics

Keyword:  数字万用表二极管基准电压烧黑故障检修故障现象显示故障故障排除起作用更换;
Abstract: <正> 故障现象:一台DT890型万用表出现一开机就显示1888,各档均不起作用。故障检修:拆开大、小印板时,发现R39(2.7kΩ)烧黑,由此说明故障系用二极管档误测引起的。更换R39后,
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