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Appendix: Region code of D Motion Picture Association of America (MPAA) divided the world into 6 regions, and gave every region a region code for locking and unlocking D playback. Please Region codes and the countries or areas represented by region codes are as follows: Region 1: America, Canada, East-Pacific Inlands; Region 2: Japan, West Europe, North Europe, Egypt, South Africa, Middle East; Region 3: Taiwan, Hong Kong, South Korea, Thailand, indonesia, etc.; Region 4: Australia, New Zealand, Central South America, South Pacific Inlands; Region 5: Russia, Mongolia, Indian Peninsula, Middle Asia, East Europe, North Korea, North Africa, North-west Asia etc.; Region 6: China mainland. If you insert a disc into the disc slot and REGION ERROR is displayed, the car multi-media system can not play the disc. The reason is that the region codes of the car multi-media system and the used disc do not match each other. igital Video igital Video igital Video as the code of the igital Video igital Video igital Video impose this restriction. igital Video igital Video - has motivated the igital Video igital Video - Basically, a coded D player can play only the discs if its region code is the same D player. Otherwise, it cannot play the disc. note that only the D discs and D players produced by the 8 biggest film-making companies of America The D discs and D players not produced by the 8 biggest film making companies of America are not restricted by the rule of region code. Generally, they are called Free Region Code or Full Region Code. The problems caused by area code inconsistency production of unlocked version D players and recodable D players . South-east Asian countries include The 8 biggest film making companies of America are as follows: 1. WarnerBros; 2. Columbia; 3. 20thCenturyFOX; 4. Paramount; 5. Universal; 6. UA(UnitedArtist); 7. MGM(MetroDogwynMayer); 8. WaltDisney