The blue light, and track display, is controlled by "FL ON/OFF" (Front Lights) button on the remote control. The other lights are described in the owners book.
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There are several configurations for the display and blue light. There is one that will eluminate the display and/or blue light so that they shutdown about 10 seconds after a function has been performed.
With this and a few other configurations, (like audio only mode), you should notice a very worthwhile improvement in sonics.