检查或维修时，请一定要切断所有输入电源。
Inspection or maintenance, be sure to cut off all input power.
详细介绍了显示器开关电源的常见故障及维修方法。
This paper carefully discusses common faults and maintenance of display button power supply.
在维修保养电器设备之前，必须先切断电源。
Shut off power before working and servicing on electrical equipment or circuits.
要更换AC电源线时，必须找有资格的维修店为您服务。
AC power cord must be changed only at the qualified service shop.
对于电气方面的维修，检查或安装，必须首先切断电源。
For electrical aspects of maintenance, inspection or installation, you must first cut off the power.
其他的测试设备维修扫描仪，电源，DDC的方块中，…。
Other test equipments maintenance scanner, power supply, DDC box,...
简要介绍不间断电源的工作原理、故障分析和维修方法。
We introduce the work principle, analyzing trouble and maintenance of UPS.
简要介绍不间断电源的工作原理、故障分析和维修方法。
We introduce the work principle, analyzing trouble and maintenance of UPS.
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