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故障现象:春雷3PL5型收录机出现不能录音故障,但收、放音正常;另外电平指示发光管常亮,不随声音大小闪烁。该机已经经二个无线电维修部检修过均未修复。分析与检修:因收、放音正常,故判定故障仅在录音专用通道上。从电路图1可以看出:录音时,开关
Symptom: Chunlei 3PL5 tape recorders can not record failure, but close, playback normal; the other level indicator LED always on, do not flash with the sound size. The aircraft has been repaired by two radio repair department have not been repaired. Analysis and maintenance: due to close, playback normal, it is determined that the fault only in recording channel. From the circuit diagram 1 can be seen: recording, switch