Device has been adjusted to the best performance in the factory, do not adjust any control or switch of default, unless operating according with the operation manual.
设备在工厂时已调至最佳性能，不要调节任何预设的控制或开关，除非按使用说明书中的指定操作。
Device has been adjusted to the best performance in the factory, do not adjust any control or switch of default, unless operating according with the operation manual.
设备在工厂时已调至最佳性能，不要调节任何预设的控制或开关，除非按使用说明书中的指定操作。
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