The manual for your player that I found online doesn’t show any error codes. Apparently there is a reset button on it somewhere, but they aren’t specific about its location.
I did find a website for support if you want to contact them, www.vr-3.com
But it is a blank page. They may not be around anymore, or their server may be down at the moment.
The online manual does have an 800 number if you want to call them: http://www.vr-3.com/downloads/VRCD400SDU_eng.pdf