好学医电在线

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<section><section powered-by="gulangu"><section><section powered-by="gulangu"><section><section><svg viewbox="0 0 1 1"></svg></section></section><section><section powered-by="gulangu"><p><strong>明日复明日，明日何其多。</strong></p></section><section powered-by="gulangu"><p>○</p></section><section powered-by="gulangu"><p><strong>无畏的太阳</strong></p></section><section powered-by="gulangu"><p>○</p></section><section powered-by="gulangu"><p><span>医疗|学习|钻研|电子电路|原理</span><br  /></p></section></section><section><section><svg viewbox="0 0 1 1"></svg></section></section></section><section powered-by="gulangu"><section><section powered-by="gulangu"><section><p><img src="image/20201019/48ce3b1af0232d0c03942fc17959241d_1.jpg" /></p></section></section><section powered-by="gulangu"><p><strong>欢迎关注</strong></p></section></section><section><section powered-by="gulangu"><section><p><img src="image/20201019/447d10550a3c243b16c8319d405b13f6_2.png" /></p></section></section><section powered-by="gulangu"><p><strong>好学医电在线</strong></p></section></section></section><section powered-by="gulangu"><p><strong>请留下你指尖的温度</strong></p><p><strong>让太阳拥抱你</strong></p><p><strong>记得这是一个有温度的公众号</strong></p></section></section></section><section powered-by="gulangu"><section><section><section powered-by="gulangu"><section><section><section powered-by="gulangu"><section><br  /></section></section></section><section><section powered-by="gulangu"><section><section><br  /></section></section></section></section><section><section powered-by="gulangu"><p>德尔格监护仪InfinityC700</p></section></section></section></section><section powered-by="gulangu"><section><section><section powered-by="gulangu"><section><br  /></section></section></section></section></section></section><section><section powered-by="gulangu"><section><br  /></section></section></section></section></section><section powered-by="gulangu"><section><section powered-by="gulangu"><section><br  /></section></section></section><section><section powered-by="gulangu"><section><p><strong>故障现象</strong></p></section></section></section></section><section powered-by="gulangu"><p><strong>接通电源，电源指示灯亮。开机，显示屏上没有任何内容显示，呈黑屏状态。</strong></p><p><strong>中间出现报警指示灯依次亮红灯，绿灯。</strong></p><p><strong>过后显示屏依旧是黑屏状态不呈现任何内容。整个过程，背光灯处于点亮状态。</strong></p><p><strong>以上故障现象时不时出现，有时候重新开关机又可以正常使用，有时候不行。</strong></p></section><section powered-by="gulangu"><section><p><img src="image/20201019/eb280f6bd35a115dec874f2853a5b820_3.jpg" /></p></section></section><section powered-by="gulangu"><section><p><img src="image/20201019/f7d7dec9f05eba21f660138c004604df_4.jpg" /></p></section></section><section powered-by="gulangu"><section><section powered-by="gulangu"><section><br  /></section></section></section><section><section powered-by="gulangu"><section><p><strong><span>分析过程</span></strong><br  /></p></section></section></section></section><section powered-by="gulangu"><p><strong>一、原理</strong></p><p><strong><span>显示器显示的大致原理：背光灯</span></strong><strong><span>亮度由灯管提供。显示的内容，由外部模<span>拟</span>信号输入到主板分析，处理，转换成数字信号。经数据线，传送到显示器上。</span></strong></p><p><strong><span>德尔格显示器大致原理：开机，高压板提供高压，点亮灯管。</span></strong></p><p><strong><span>主板读取硬盘里面预设的系统程序。将这些程序</span></strong><strong><span>（</span></strong><strong><span>数字信号</span></strong><strong><span>）</span></strong><strong><span>经数据线传送到显示屏，经MCU处理，将系统固有</span></strong><strong><span>UI界面显示到屏幕上。</span></strong></p><p><strong><span>当外部</span></strong><strong><span>模拟</span></strong><strong><span>信号输入，由</span></strong><strong><span></span></strong><strong><span>A/D转换电路，转换成数字信号，经主板CPU处理，分析后，从数据线传输到屏幕上。</span></strong></p></section><section powered-by="gulangu"><section><p><img src="image/20201019/f5308e3c950e38abf63604ae49546f75_5.jpg" /></p></section></section><section powered-by="gulangu"><p><span><strong>二、分析</strong></span></p><p><strong><span>根据故障现象及</span></strong><strong><span>原理，可以排除电源和</span></strong><strong><span>背光灯管</span></strong><strong><span>。根据</span></strong><strong><span>时好时坏，将故障锁定在以下：</span></strong></p><p><strong><span>①数据线接触不良，导致信号丢失，内容不显示。</span></strong></p><p><strong><span>③屏幕MCU处理器故障。</span></strong></p></section><section powered-by="gulangu"><section><section powered-by="gulangu"><section><br  /></section></section></section><section><section powered-by="gulangu"><section><p><strong>解决方法</strong></p></section></section></section></section><section powered-by="gulangu"><p><strong>由简入繁，首先将显示器拆开，看到主板，找到数据线，清洁数据线接口，试机三天，测试正常。判断数据线接触不良。</strong></p></section><section powered-by="gulangu"><section><p><img src="image/20201019/80722dbbf9b536b2779097e98eae4bf5_6.jpg" /></p></section></section><section powered-by="gulangu"><p><br  /></p></section><section powered-by="gulangu"><section><section powered-by="gulangu"><section><p>欢</p></section></section></section><section><section powered-by="gulangu"><section><p>迎</p></section></section></section><section><section powered-by="gulangu"><section><p>关</p></section></section></section><section><section powered-by="gulangu"><section><p>注</p></section></section></section></section><section powered-by="gulangu"><p><br  /></p></section><section powered-by="gulangu"><section><section powered-by="gulangu"><section><p><img src="image/20201019/48ce3b1af0232d0c03942fc17959241d_1.jpg" /></p></section></section></section><section><section powered-by="gulangu"><section><section></section></section></section></section><section><section powered-by="gulangu"><p>好学医电在线</p><p>和他的朋友们</p></section></section></section></section>