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影碟机中,碟片上信息纹轨是依靠激光束读取的,在使用过程中会逐渐出现由于激光头衰老引起的故障。例如:始端读碟时间变长,甚至识读不出;新碟能重放,旧碟不能重放;选曲跳轨或不能选曲等。对于早期衰老的激光头,可以通过调整
In the DVD player, the information track on the disc is read by the laser beam, and the failure caused by the aging of the laser head will gradually appear during use. For example: the beginning of the disc reading time longer, or even read; new disc can be replayed, the old disc can not be replayed; For early aging laser head, can be adjusted