故障存储器允许用户和计算机记录的问题，通过使用的，观察趋势可能表明需要修改的过程中，故障排除或预防性维修。

Fault memory allows the user to record problems and, through the use of a computer, observe trends that could indicate a need for process modification, troubleshooting or preventive maintenance.

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本文结合V12绘图仪的实际维修对该设备接口电路进行了详尽地分析，列举了接口电路的常见故障并给出了相应的故障排除方法。

In combination with the practical maintenance of V12 plotter, the paper analyzed in detail the interface circuit of the equipment and gave the troubles easily appeared and removing methods.

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本文主要讲述了数控机床常见电气故障的分类，遇到电气故障时的检查与分析方法，常见电气故障的维修与排除办法。

This article mainly deals with different types of electric faults of numerical lathes, as well as approaches to examine and analyze the faults and commonly used ways of maintenance and faults removal.

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