罗氏COBAS C501故障处理实例

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                    <section data-tools="gulangu" data-label="powered by gulangu"></section><p><br  /></p><section data-style-type="4" data-tools="新媒体排版" data-id="8577"><p><p><img src="image/20200927/c99d783480f724f577662d010de81c25_1.gif" /></p></p><section data-style-type="1" data-tools="新媒体排版" data-id="12960"><section><section><section><p>反馈的故障现场</p></section></section></section></section><section><span><span>仪器在更换样本针后在做样本时报</span><span>UP/DOWN</span><span>错误。</span></span></section><p><p><img src="image/20200927/f01b721de7aaf9d1cd5aeaa47a726cac_2.jpg" /></p></p><section data-style-type="1" data-tools="新媒体排版" data-id="12960"><section><section><section><p>前期沟通与指导</p></section></section></section></section><p><span>和操作老师确认无异常碰撞无异响。</span><span></span></p><section data-style-type="1" data-tools="新媒体排版" data-id="12960"><section><section><section><p>现场验证故障</p></section></section></section></section><section><span><span>现场查看，报警后点击</span><span>Reset</span><span>可以正常初始化，在做样本时到加样位的时候停止，仪器报</span><span>sampleprobe up/down</span><span>错误，期间仪器运行无异常现象。</span></span><span></span></section><section data-style-type="1" data-tools="新媒体排版" data-id="12960"><section><section><section><p>故障分析及处理</p></section></section></section></section><p><strong><span>报警机理</span></strong><span></span></p><p><span>样本针上下移动错误的报警机理为样本针防撞传感器状态异常。</span></p><p><p><img src="image/20200927/bb5467b5fe7438409622a06f2a4c64d6_3.jpg" /></p></p><p><strong><span>分析</span></strong><span></span></p><p><span>该报警多由一下几种故障引发：</span></p><p><span><span>1.样本针在上下移动时有物理干涉，引发传感器报警，但此类故障绝大多数可以肉眼观察出问题点，至少也能听见异常的响声——如齿轮摩擦声、丝杆摩擦声等</span><span>。但并没有观察到异常，此项故障排除</span></span></p><p><span><span>2.</span><span>样本针液面感应电路板故障。如果是电路板故障，则在初始化一开始便应该报错，而不是在初始化成功后加样位报错。</span></span></p><p><span><span>3.</span><span>传感器故障。分析原因和上边一样，如果传感器故障，则初始化一开始便不能成功。</span></span></p><p><span><span>4.</span><span>样本针位置不对。样本针挡片正常情况下应遮挡住防撞传感器，如果位置略微上下偏移，则传感器可能报警。</span></span></p><p><br  /></p><p><strong><span>处理</span></strong><span></span></p><p><span><span>1.</span><span>取下样本针上盖。可发现由于特氟龙管较硬，样本针有略微翘起。</span></span></p><p><p><img src="image/20200927/a9b69a1e6a6383ab37fea8809efc4389_4.jpg" /></p></p><p><span><span>2.</span><span>观察样本针盖上下压的弹簧，和</span><span>ISE</span><span>试剂针上的比对，明显弹力比较小。</span></span></p><p><p><img src="image/20200927/64c875c8d53fd763c7926cb83ec83c2f_5.jpg" /></p></p><p><span><span></span></span><br  /></p><p><span><span>3.</span><span>因为</span><span>ISE</span><span>试剂针位置良好，故将样本针上盖和</span><span>ISE</span><span>上盖互换。</span></span></p><p><span><span>4.</span><span>更换后正常。</span></span></p><section data-style-type="1" data-tools="新媒体排版" data-id="12960"><section><section><section><p>故障总结</p></section></section></section></section><p><span></span></p><p><span><span>1.</span><span>仪器报警多数时候并不是很明显的可以找出故障，我们维修机器的时候一定要参考报警机理和仪器运功原理逐步排查问题点。</span></span></p><p><span><span>2.</span><span>在找到问题后要充分利用手边便利条件，不能一味地等配件换配件等。否则以方便耽误了时间，另一方面又让客户对我们不信任。</span></span><span></span></p><p><br  /></p></section>