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超短波治疗机的常见故障是电子管ＦＵ—８１１的损坏。而在损坏的ＦＵ—８１１管中真正达到使用寿命终止的并不多，而相当一部分管子是由于输出电路不谐振、管子不匹配或插拔不当等原因而损坏。对于因上述原因而损坏的管子弃之可惜，只要略加维修，便可获得再生成。一、判定标
The common fault of ultra-short wave therapy machines is the damage of the FU-811 tube. There are not many end-of-life end-of-life failures in the damaged FU-811 tube, and a considerable part of the tube is damaged due to the output circuit not resonant, mis-matched or improperly inserted or unplugged. It is a pity that the pipes that have been damaged due to the above-mentioned reasons are discarded. As long as they are repaired, they can be regenerated. First, determine the target