1. Press Quick menu.
2. Scroll to Settings and press OK.
3. Scroll to System and press OK.
4. Scroll to Parental Controls and press OK.
5. Enter a 4 digit PIN.
If a System PIN has already been set enter your System PIN.
6. Repeat the 4 digit PIN.
7. Scroll to Locks and press OK.
8. To put parental restrictions on a specific area scroll to the relevant setting (E.g. Input Block) and press OK.
9. Scroll to the Input you would like to lock (E.g. HDMI1) and press OK.
10. The Parental Lock is indicated by a Padlock icon.