The passwords are either xx0x (replace the x's with a single number from 1 through 9, for example, 9909), ze-ku-ro-mu (type this in the translator without the hyphens which is the fourth option on the bottom, or re-shi-ra-mu. If it is a number password, when you talk to some of the plasma grunts near the password machine, they should have a number highlighted in brackets. That's the number you need to replace the x's with.