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故障现象：ＤＶ－５３０Ｋ型影碟机，播放碟片时，图像时有时无且质量差，并伴有水平波纹状干扰。分析与检修：从该机故障现象来看，一般为激光头物镜受灰尘污染或位置偏移造成。卸下机盖，先用无水酒精棉球清洁激光头物镜后再试机，故障依旧。在通电状态下仔细观察激光头运行
Symptom: DV-530K-type player, playing discs, the image sometimes without quality and poor, accompanied by horizontal corrugated interference. Analysis and Maintenance: From the machine fault phenomenon point of view, the general laser head lens by dust pollution or position shift caused. Remove the cover, first clean the laser head with anhydrous alcohol cotton ball and then test the machine, the fault still. Carefully observe the laser head running in the power state