求翻译：在更换光接口板时，要注意在插拔光接口板前，应先拔掉线路板上的光纤，然后再拔线路板，不应带纤插拔光口板。是什么意思？

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To replace the optical interface board to be aware of when plug-in interface boards before you remove the circuit board, fiber board and then unplug and should not be a slim plug-port board.

Meets the oral plate when the replacement light, must pay attention in inserts pulls out the light to meet in front of the oral plate, should capture the line panel optical fiber first, then pulls out the line board again, should not bring the filament to insert pulls out the light oral plate.

When you replace the optical interface board, should pay attention to in front of the swappable optical interface board, you should unplug the fibre on the circuit board, and then dial the circuit board should not take fiber pluggable optical plates.

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