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1.Press DVD "OPEN/CLOSE" key (RC (remote Control) or main unit) to open the DVD tray (note:if no disc on tray,then you have not to open it); 2.Press RC "SYSTEM" key to enter DVD system setup menu; 3.Press RC "direction "key to hightlight the forth item "PREFERENCE PAGE" (not entering the sub-item ); 4.Press RC numeric key sequentially 811502(entery code,no display on TV); 5.Press RC "down direction" or "up direction" key to change REGION CODE,"0" is all code. 6.Press RC "OK" key to confirm. 7.Press RC "SYSTEM" key to exit DVD system setup menu.