CD－BOM驱动器，又称先驱，是微机系统中重要的只读外存设备，由机械部件、电子部件和光学部件三类部件组成。随着软件光盘化日益成为潮流，CD－ROM驱动器的使用率大大提高。但在使用、维护时较普通软盘、硬盘复杂，且故障率较高，故障的分析、定位也较复杂。光驱的故障按故障? CD-BOM drive, also known as a pioneer, is an important read-only memory device in a microcomputer system. It consists of three parts: mechanical parts, electronic parts and optical parts. As software CD-ROM is increasingly becoming the trend, CD-ROM drive usage has greatly increased. However, when used and maintained, it is more complicated than ordinary floppy disks and hard disks, and has a high failure rate. Fault analysis and positioning are also complicated. Optical drive fault by fault?