Philips 32PFL9604H - Manual (Page 129)

3.4.2 Child lock 1/2
To prevent children from watching TV, you can lock the TV
or block age rated programmes.
Set your personal code
Before you set Child lock to lock the TV or set an age rating,
set your personal lock code in h > Setup > Features > Set
code.
Enter the four-number code with the number keys.
You can always change the code if necessary.
Child lock
Select Lock as Child lock setting, to lock all TV channels
and the programmes from devices.
When Lock is set, you need to enter your personal code to
unlock the TV.
The lock is activated the moment you close the menu on
screen or set the TV in standby.
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