例一:录放声小,失真,抹音不净。这种现象与录音机超音频电路出现故障时的情况相似,检查时必须加以正确区分。当超音频电路及磁头完好时,故障可能出现在录音机的盒门上。取下盒门,将磁带放入带仓并紧贴带仓底部,录音重放上述故障消失时,说明故障的出现确系盒门不良所致。此时可用食指按盒门两侧的磁带压片,手感发现压力片 Example 1: recording and playing sound is small, distortion, erase sound is not net. This phenomenon is similar to the case when the audio circuit of the recorder is faulty, and the correct distinction must be made during the inspection. When the super audio circuit and the head is intact, the fault may appear on the cassette door. Remove the box door, put the tape into the tape cartridge and close to the bottom of the tape cartridge, the replay of the recording above disappears, indicating that the failure is caused by the bad box door. At this point available index finger press the tape on both sides of the box, feel the pressure piece