1.光路偏移的调节激光头受到碰撞或人为拆动时,会造成激光头的光路偏移。当偏移量较小时,会产生不能读目录选曲难等现象,严重时还会造成碟片不转动等故障。若发现光栅移位,则通过调节光栅的位置,使光路恢复正常。若校面透镜发生移位,可重新调整它的位置,使三 1. Adjustment of optical path offset When the laser head is collided or artificially disassembled, the optical path of the laser head will be offset. When the offset is small, can not read the directory can not be too difficult to select the song, the serious will cause the disc does not rotate and other failures. If you find the grating shift, then by adjusting the position of the grating, the optical path to return to normal. If the facet lens shift, you can re-adjust its position so that three