激光头的维修（国外英文资料）.docVIP

激光头的维修（国外英文资料） Laser head maintenance (1) The CD laser is a precise optical electromechanical integrated device that USES a laser beam to convert a pit point signal into an electrical signal. CD players in general Two types of laser heads: a holographic laser head represented by the philips laser head. The second is the SONY laser The CD laser is a precise optical electromechanical integrated device that USES a laser beam to convert a pit point signal into an electrical signal. CD players in general Two types of laser heads: a holographic laser head represented by the philips laser head. The second is represented by the SONY laser Normal three-beam laser head. Based on the practice experience, this paper introduces the maintenance and substitution method of CD laser head, and hopes to make some changes to the readers Help. Note: this article also applies to the maintenance of the laser head of the computer. The maintenance of a CD laser head The common failure of the CD laser is shown in the following table: CD laser head common failure Philips series of laser head typical failure performance A typical failure of the SONY series of laser Objective the dirt; Objective lens wear away; The objective component sinks; Laser tube aging; The surface of the laser tube is dirty; Internal prism smudges; Focus, Trace coil deformation, open circuit, short circuit or virtual welding. It started to play very well, and a few minutes later the error correction went bad until it crashed. Some discs can be played, but most are not. Its very slow and lasts long; Individual disc cannot play, error correction is bad, Mosaic is serious. The gear is dislocated and worn; Foreign bodies stuck; Line break. The disc does not rotate, but the light has a focused action, and the light tube has a laser. The main shaft motor flies, but not the disc. Oxidation of the plug-in, bad contact The disc stops in a few circles, the light tube has a laser, and there is a focus motion. The ability to read di