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故障现象:TOSHIBA MODEL KT—4222型收放音随身听,收音正常,播放磁带时声音发尖,但用力按机器外壳声音正常。故障处理:此故障属电机稳速电路问题。该机放大、电机稳速均由LAG673集成电路担任。测第(?)、(17)脚(电机两端)电压
Symptoms: TOSHIBA MODEL KT-4222-type Walkman sound, normal radio, the sound when playing tapes, but press the machine shell sound normal. Troubleshooting: This fault is a motor speed circuit problems. The aircraft amplifier, motor speed by LAG673 integrated circuits. Measure the first (?), (17) feet (motor ends) voltage