The initial code is 0000
When the Dreamscape logo is in front of you, you will find 2 buttons on the right, and 1 on the left:
_ press the large button on the right to unroll the cable,
_ press the end of the cable firmly into the lock: you will hear 2 "" clicks "",
_ scramble the code: it is locked,
_ reset 0000,
_ press the left button, the cable is released,
_ press the right button, the cable retracts.