关于件号6430A与16432面板背景灯光调节变压器的互换性问题
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<span style="color: #888888;font-size: 12px;">分享即成长。大家好，欢迎关注<span style="color: #2f2f2f;"><strong>阮工频道</strong></span></span>
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<span style="font-size: 15px;">防错装，一直在路上……</span>
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<strong>1</strong>
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<strong>事件背景</strong>
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<span draggable="true" style="color: #3f3f3f; font-size: 15px; text-decoration-style: solid; text-decoration-color: #3f3f3f;">某737-800飞机，机组反映P5板亮度调节开光调节无效：</span>
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<span draggable="true" style="color: #3f3f3f; font-size: 15px; text-decoration-style: solid; text-decoration-color: #3f3f3f;">拉出来可以调节，但是松掉后，马上变暗。</span>
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<span style="color:#3f3f3f;"><span style="font-size: 15px;">按MEL 33-23放行：</span></span>
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<span style="color:#3f3f3f;"><span style="font-size: 15px;">查询SSM/WDM 33-12-12，判断为调光的调压器T31故障：<br/></span></span>
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<span style="color:#3f3f3f;"><span style="font-size: 15px;">航后调件更换T31后测试正常：<br/></span></span>
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<span style="color:#3f3f3f;"><span style="font-size: 15px;">参考IPC 33-11-52-01，T31的件号为16432：</span></span>
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<span style="font-size: 15px;">无独有偶，没过多久，另一架飞机也出现同样的故障现象，由于<span style="font-size: 15px;letter-spacing: 0.578px;text-align: left;text-wrap: wrap;">航材</span><span style="font-size: 15px;letter-spacing: 0.578px;text-align: left;text-wrap: wrap;">无件，</span>经过倒件确认也是T31故障。</span><br/>
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<span style="font-size: 15px;">查询排故记录发现，也有飞机排故时使用件号6430A更换了16432，件号6430A的调压器航材有件。</span><span style="font-size: 15px;"></span>
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<span style="font-size: 15px;">进一步查询发现，参考IPC 33-11-00-13，在P1-9面板上，使用件号16432和6430A都可以：<br/></span>
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<span style="font-size: 15px;">为什么会这样呢，6430A与16432之间存在互换性吗？</span>
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<strong>2</strong>
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<strong>问题分析</strong>
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<span draggable="true" style="color: #3f3f3f; font-size: 15px; text-decoration-style: solid; text-decoration-color: #3f3f3f;">进一步查询件号233A2227-1的P1-9板的CMM：</span>
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<span style="color: #000000;"><strong><span draggable="true" style="color: #000000; font-size: 15px; text-decoration-style: solid; text-decoration-color: #3f3f3f;">对于件号233A2227-1的P1-9板，可以看出6430A用于MOD A的面板，16432用于MOD NONE的面板，两者并不是互换的：</span></strong></span>
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<span draggable="true" style="color: #3f3f3f; font-size: 15px; text-decoration-style: solid; text-decoration-color: #3f3f3f;">查询6430A和16432对应的CMM，除了内部部件有一点差异以外，性能上是最大输出电流有差异：</span>
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<span style="font-size: 15px;">铭牌上也能看出来：</span><br/>
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<strong>维护提示</strong>
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<span style="color: #000000;"><strong><span draggable="true" style="color: #000000; font-size: 15px; text-decoration-style: solid; text-decoration-color: #3f3f3f;">件号6430A与16432之间没有互换性，不能进行替换。</span></strong></span>
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<span draggable="true" style="color: #3f3f3f; font-size: 15px; text-decoration-style: solid; text-decoration-color: #3f3f3f;">厂家计划在15-APR-2024版的IPC中针对233A2227-1面板子部件会加入相应的USED ON限制：</span>
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<span draggable="true" style="color: #3f3f3f; font-size: 15px; text-decoration-style: solid; text-decoration-color: #3f3f3f;">Transformer PN 16432 used on Panel Assy PN 233A2227-1 (MOD NONE) and PN 6430A used on PN 33A2227-1 (MOD A).</span>
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<span draggable="true" style="color: #3f3f3f; font-size: 15px; text-decoration-style: solid; text-decoration-color: #3f3f3f;">对于一线人员来说，平时遇到上下件号不一致时，一定要举手报告，让工程师进一步确认。</span><span style="color: #000000e4; font-size: var(--articleFontsize); text-align: center; text-indent: 0em;"></span>
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</section>
</section>
</section>
<section class="_editor">
<p>
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</section>
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