Samsung UN46ES7500FXZA E-Manual page 174

entry field to lock (That is, you "click
it".). For example, click the lock at
the intersection of
and you block all programs that are
rated violent and for mature adults.
N
To unblock a category, click the lock
icon. To unblock all the categories in
a row, click the lock under ALL.
N
To watch a blocked program, you
must enter the PIN code when
requested.
V and TV-MA,