Before enabling administrator lock

For detail see, "How to configure to administrator lock".
 

After enabling administrator lock

When administrator lock is enabled, key symbols appear on the settings keys.
A 6-digit passcode must be entered in order to access the settings screen after touching its settings key.
 

1. Touch  .
   The administrator passcode input screen appears.
   • The same happens if  or  is touched.
2. Type in the 6-digit passcode.
   
   If the correct passcode was entered, the settings screen can be accessed.
   • If the wrong passcode is entered 10 times, the passcode will be reset and return to the initial passcode (999999).

Canceling administrator lock

1. Touch  .
   The general settings screen appears.
    
2. Locate [Passcode Setting] in the Settings pages.
    
3. Touch [OFF] beside [Admin Lock].
   
   
    
4. Touch  .
   Administrator lock is canceled, and the key symbols are removed from the settings keys.