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实例一:LX-K680EN型影碟机,A面播放正常,当播放B面时,机内发出“咔咔”杂音且不能重放,数秒后自动停机。 分析与检修:根据故障现象分析,能正常重放B面节目,说明整机电路工作基本无问题,当重放B面时机内有“咔咔”杂音,则可能是机内机械传动部分有问题。打开机盖,并放入碟片播放B面进行观察,发现挂在翻面机构上的长弹簧不停地颤抖,磁头组件在轨道上行走一段,但翻不上B面,翻面机构主齿轮凹进部分不能与磁头组件上的凸头咬合,叉杆也不能把磁头组件带到B面,凸头被卷到主齿轮的下面,由于轨道与主齿轮的间隙很小,不能把凸头带过齿轮而发出声音,并导致机器自动停机。拆下翻面
Example 1: LX-K680EN type DVD player, A surface playback normal, when playing B surface, the machine issued a “Kaka” noise and can not be replayed, automatically shut down after a few seconds. Analysis and overhaul: According to the analysis of the fault phenomena, B program can be normally replayed, indicating that there is no problem in the whole circuit work. When there is a “Kaka” noise during the replaying of the B surface, there may be a problem with the mechanical transmission part in the machine . Open the lid, and put the disc playing B surface observation and found hanging on the turning mechanism on the long spring trembling, head components in the track for some walking, but can not turn B surface, turn the main gear mechanism The recessed portion can not engage with the convex head on the head assembly, the fork rod can not bring the magnetic head assembly to the B surface, and the convex head is wound under the main gear. Because the gap between the rail and the main gear is small, Speakers make noise and cause the machine to shut down automatically. Remove the flip