论文部分内容阅读
近日笔者连续修过三台转修的影碟机,其原发性故障均为不读碟,这三台机器虽产自不同的厂家,但都是采用相同的飞利蒲机芯,激光头为M1202,RF放大电路由TDA1300T及外围元件组成,数字信号处理电路由SAA7327H及外围元件组成,RF放大电路和激光头供电电压均为5V。由于前维修人员忽视了对5V供电电路的检查,不但没有修复机器,其中有两台的激光头也被人为损坏,造成了不必要的损失。现将这三台故障机的检修过程总结出来,以期与
Recently, I continued to repair three DVD players, the primary failure are not read the disc, although the three machines from different manufacturers, but they are using the same Philips movement, the laser head is M1202, RF amplifier circuit consists of TDA1300T and peripheral components, digital signal processing circuit consists of SAA7327H and peripheral components, RF amplifier circuit and the laser head supply voltage is 5V. As the former maintenance staff ignored the inspection of the 5V power supply circuit, not only did not repair the machine, of which two laser head has also been artificially damaged, resulting in unnecessary losses. Now these three failures machine maintenance process summed up in order with