B26xx飞机VHF-COMM-2
<span class="Apple-style-span" style="line-height: normal;">B26xx飞机VHF-COMM-2.pdf</span><div><span class="Apple-style-span" style="line-height: normal;">**** Hidden Message *****<br></span></div> <div>11月22日航后机组反映B26xx飞机VHF-COMM-2既不能发射，也不能接收。下面是VHF-COMM-2原理图：</div><div><br></div><div>•根据FIM23-12 TASK816可知，可能的原因为:</div><div>•(1) VHF communication transceiver, M150 (VHF-2)</div><div>•(2) Radio tuning panels (RTP): P8-71 (RTP-1), P8-72 (RTP-2), or P8-73 (RTP-3)</div><div>•(3) Audio control panel, P8-6 (captain), P8-7 (first officer) or P5-15 (first observer)</div><div>•(4) Remote electronics unit, M1353</div><div>•(5)VHFcommunicationantennaM58(VHF2)</div><div>22日航后分别对ACP，RTP,VHF-COMM-2收发机，VHF-COMM-2天线，REU进行了隔离，确认故障不是上述部件引起。23日白班继续排故，故障原因基本上锁定为：1. RF 同轴电缆故障；2.其它线路问题。我们先隔离RF 同轴电缆。</div><div>•下面是SSM23-12-11中VHF-COMM-2收发机与VHF-COMM-2天线的信号连接图：</div><div><br></div><div>下面是从天线到收发机的WDM</div> B26xx飞机VHF-COMM-2
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