例1 DV-530K型影碟机通电后放入碟片播放时,图声时有时无且质量差并伴有白水波条干扰。 分析与检修:此种现象一般为激光头物镜使用久受灰尘污染或光头位置偏移造成。打开机盖,先用无水酒精棉球清擦激光头物镜后再试机,故障依旧。再在通电状态下仔细观察激光头运行情况,发 Example 1 When the DV-530K is powered on and put in the disc, the sound of the picture sometimes has poor quality and is accompanied by the interference of the white water wave. Analysis and Maintenance: This phenomenon is generally the use of laser head endures long dust pollution or head position offset caused. Open the lid, first clean the laser lens with anhydrous alcohol cotton ball and then try the machine, the fault still. Then carefully observe the state of the laser head operating conditions, hair