公共天线系统维修保养程序.docVIP

公共天线系统维修保养程序 公共天线系统维修保养程序作者：佚名 时间：2017-8-11 浏览量： 目的:保证公共天线主系统正常工作,让每一户都能接收到图像清晰、无干扰的良好的电视信号。 适用范围:本公司所管理的大厦公共天线系统。 职责: 由维修班实施具体的维修及保养工作。 由分公司维修服务及进行检查,工程部进行监督和技术指导。 维修内容: 当某个单元电视天线发生故障,首先检查该住户终端板上有无信号,信号是否能达到60-65db;如达不到,再检查楼层分支器信号是否正常;如果正常则是楼层到住户之间的电缆线有问题;检查线路如不正常则加以更换。 如楼层分支器信号不正常,检查该分支前的放大器输出信号是否正常;如不正常,再检查分支放大器输入信号是否正常;如正常,可判定分支放大器损坏,修理或更换分支放大器。 如楼层分支放大器输入信号不正常,检查系统主放大器输出信号是否正常,如不正常,再检查主放大器输入信号是否正常;如正常,可判定主放大器损坏,应修理或更换主放大器。 如主放大器输入信号不正常,再检查系统前置放大器的输出信号;如果正常,可判定前置放大器损坏,应修理或更换前置放大器。 如前置放大器输入信号不正常,再检查天线架方向是否正确,如正确,可判定天线架损坏,应修理或更换天线架。 保养: 每月实施保养工作,并作好记录。 天台接收系统 每月检查天线连接有无松动、生锈、断裂,绝缘有无老化,屏闭线有无断裂等现象。 检查天线支撑杆、底座螺丝的固定情况;检查有无生锈,并加黄油保护;检查拉线的松紧及避雷接地是否良好。 检查天线架有无断裂现象,天线架的固定情况。 天台接收系统由于是露天安装,风吹、日晒、雨淋,防止生锈尤为重要。凡是铁件定期刷银粉漆,一季度一次,雨季季节可以提前。 如遇大风、大雨天气,待大风、大雨过后上到天台检查一次系统如有异常应及时处理。 放大系统 主放大系统每月除尘一次,检查通风是否良好,连线有无松动、脱落;用场强仪检查一次主信号是否正常。 每月检查一次分支放大器和每个分支放大器的一个终端信号是否在60-65db。 Measures for the routine management of moral education in Middle SchoolsMethod of conventional management of moral education in middle schoolFirst, the guiding ideology:School moral education is an organic whole of the whole education work, always adhere to the school adhere to the moral education, education for this product, and actively promote the quality education, the school building efficient curriculum system of moral education, moral education, improve the sense of attraction and appeal, enhance the moral education work for through and timeliness. Teach everyone, service education and management education, and school moral education work must be with family education and community education closely together, to form a concerted pattern, and strive to create a good atmosphere for education, and to promote the all-round development of students, to establish a scientific moral education full of vigor the For long-term mechanism.Two, the goal of moral education:To guide the students to form the correct world outlook, outlook on life, values, to cultivate students unity and mutual ass