Coby tv-dvd1390 用户手册

Block Enable

Turn the V-Chip controls on or off.

Unrated

Turn the rating system on or off.

Change Password Change the Parental Control password. 

  Do  not  forget  the  Parental  Control  password; 

this password cannot be reset. 

For your reference:
TV broadcasts include a signal that classifies the contents 

of the program. When the V-Chip rating options are set, TV 

broadcasts that have been classified with a higher rating will 

be blocked.
For more information about ratings in the USA, please visit 

http://www.fcc.gov/vchip/.
For more information about ratings in Canada, please visit 

http://www.vchipcanada.ca/.