有线电视CATV(Cable Television的缩写)已经发展了多年,随着时间的推移和节目源的不断增多,要保证用户高质量收看电视,必须对CATV系统的前端设备、传输网络和终端用户部分经常进行维护和检修,及时发现和解决问题,确保系统的正常运行和用户的正常收视。本文从分析CATV系统故障原因入手,并列举具体故障现象来说明检修的方法。 Cable CATV (Cable Television abbreviation) has been developed for many years, with the passage of time and increasing sources, to ensure that users receive high-quality television, the CATV system must be the front-end equipment, transmission networks and end-user part of the regular Maintenance and repair, timely detection and resolution of problems, to ensure the normal operation of the system and the user’s normal viewing. This article starts with the analysis of the causes of CATV system failures, and lists the specific failure phenomena to illustrate the methods of maintenance.