the whole procession only takes 3 minutes. there are voice guidance, left and right channel testing. 【advantage of this product】its operation is simple. using a cleaning kit to clean up can improve these problems and extend the life of the machine. when these problems occur with your player, it may be that the laser lens on the device is dirty. 【what problem can it solve?】the cd/vcd/dvd device is ejected, the playback is stuck, the picture is not clear, and the loading is slow.
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