Marantz DV-4000 region-free hack

NOTE: Please note that this conversion may only work a maximum of 25 times! After this time the machine may end up locked to the last region changed to

Turn On the player with no disc in the tray

Press Dimmer (on front panel)

Press Previous (on front panel)

The display should show 4 dashes

Press 1 9 9 9

Enter 01 for Region 1, 02 for Region 2, 04 for Region 3, 08 for Region 4, 10 for Region 5, 20 for Region 6 or 00 for Region free

Press Enter

Turn power Off and On