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若无动作,则检查驱动电路的供电,供电无问题,是驱动电路损坏。接下来检查伺服处理电路输出的循迹伺服控制信号和RF信号处理电路输出的循迹误差信号。对索尼2549+2545机心,CXA2549的“#!脚为循迹误差(TE)信号输出端,在播放时应有800mV左右的循迹波形,若无此波形,则检查CXA2549及
If no action, check the drive circuit power supply, power supply is no problem, the drive circuit is damaged. Next, the tracking servo control signal output from the servo processing circuit and the tracking error signal output from the RF signal processing circuit are checked. On the Sony 2549 + 2545 movement, CXA2549 ”#! Feet for the tracking error (TE) signal output, the playback should be about 800mV tracking waveform, if no such waveform, then check the CXA2549 and