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投影仪在烧录、设置Pattern Sequence时一切正常，没有提示任何错误，但是就是投影投不出来。后来在Video Mode下，设置 Internal Test Pattern，也是无法投影。设置Parallel RGB的时候，电脑能识别到DLP投影仪这个扩展屏，但依旧无法投影。板子上的指示灯一切正常。换了两台电脑和两根USB连接线都不行。请问这是硬件的问题吗？
