检查阴极是否接触不良，适时调整。

Check whether the cathode poor contact, timely adjust.

检查相应控制回路是否断线或接触不良。

Check whether the control circuit is disconnected or contacted well.

若在调节电阻值的过程中，表针有跳动现象，则说明该电位器存在接触不良的故障。

If in the regulation of the resistance value of the process, hand beating phenomenon, the existence of the fault of bad contact potentiometer.

结合故障实例进行分析，针对无故障码显示的线路断路和接触不良故障，提出了检测方法和维修方法。

Analyzing through the trouble example, and put forward the method of inspection and maintenance according to the trouble of broken circuit and improper contact of circuit of no-trouble code display.

本文对传统全防潮R20型电池商标改彩塑商标后的铁底进行设计。它克服了铁底松动、接触不良等问题。

A new colour plastic trademark design for tin-base of the R20 type moisture "resistant battery used instead of traditional paper trademark was discussed."