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/c2fa04fb649680798bb6aa9bc6176b66_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/20201019/64cd550de26cc177e130145ec87589c4_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>呼吸机（史蒂芬妮Stephanie）</p><p><br  /></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>开机屏幕花屏加闪屏，没有数据显示。</strong></p></section><section powered-by="gulangu"><section><p><img src="image/20201019/8d53a4a9e0a971c5817504cb7dd02532_3.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><span>分析过程</span><br  /></p></section></section></section></section><section powered-by="gulangu"><p><strong>一、原理</strong></p><p><span><strong>屏幕显示的原理：屏幕上的亮度由高压板提供高压到背光灯灯管，屏幕上的数据显示由传感器接收到的信号，经主板CPU处理，分析，计算，最后经A/D转换成数字信号，传送到显示屏上面，并显示。</strong></span></p></section><section powered-by="gulangu"><p><span><strong>二、分析</strong></span></p><p><span><strong>根据故障现象屏幕亮度显示正常，排除背光灯的问题。一直闪屏，且没有任何数据显示。说明数据没有过来，高压板供电不稳。判定有以下几种情况：</strong></span></p><p><span><strong>前级：①数据线接触不良。②高压板供电异常。③屏幕MCU（数据处理器）损坏，导致屏幕没有运行起来。</strong></span></p><p><span><strong>后级：④主板(CPU)故障。</strong></span></p></section><section powered-by="gulangu"><section><p><img src="image/20201019/3f666001c15b030548a9644fd7edc2ce_4.jpg" /></p></section></section><section powered-by="gulangu"><section><p><img src="image/20201019/23eba21d1fadc220b29d6043e78c04c9_5.jpg" /></p></section></section><section powered-by="gulangu"><p><span><strong><br  /></strong></span></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>拆下外壳底下两个十字螺丝，卸掉FiO2调节旋钮。拆开上盖，取掉顶上两个十字螺丝，取下整块屏幕。</strong></p></section><section powered-by="gulangu"><section><p><img src="image/20201019/fd361aa9b12db4c816a4680bf1233720_6.jpg" /></p></section></section><section powered-by="gulangu"><p><strong>可以看到里面主板到屏幕直接的数据线，取下数据线清洁灰尘，装机试机，屏幕显示正常。</strong></p></section><section powered-by="gulangu"><section><p><img src="image/20201019/e12943e9e37524f54d16f81026470712_7.jpg" /></p></section></section><section powered-by="gulangu"><section><p><img src="image/20201019/7c228b1277b16b94f70f9592d245b5c9_8.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/c2fa04fb649680798bb6aa9bc6176b66_1.jpg" /></p></section></section></section><section><section powered-by="gulangu"><section><section><br  /></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 powered-by="gulangu"><section><section><svg viewbox="0 0 1 1"></svg></section></section><section><section><svg viewbox="0 0 1 1"></svg></section></section></section></section>