Chapter 19 Password Management and Data Protection Unlocking the TC-01 password key Click the Tools menu, point to DU01 Setting , click Clear TC-01 Password Key , and click Yes in the Delta ISPSoft window. (3) After the users set a TC-01 password key, or unlock the TC-01 password key, KEY SET will be displayed on DVPDU-01. Press ESC on DVPDU-01. 19-15