Akai DVD-200BL
1. Press the Open/Close button on your remote control
2. Press the Setup button on your remote control
3. Press the buttons 1, 3, 6 and 9, in order, one at a time, on your remote control
4. Press the Left button on your remote control three times, in succession
5. Press the Right button on your remote control
6. You should now be in a setup menu.
7. Select the Version option from the menu, then select the Region option.
8. You can now change the region to 1 for region 1, 2 for region 2, and so on, or 0 for multi-region playback
If you are unsuccesfull with the above code then it may be worth trying one of the resources below.