Samsung LS57BPHNB-XAA - Manual (Page 65)

It will be unlocked.
Note
• When setting the Lock function, you can only operate the power and lock buttons on the remote control
and set.
The preset password on the LCD Display is "0000".
Note
• Resetting the password for the function key lock.
Press MUTE → 1 → 8 → 6 → On. The password will be reset to '0000'. The remote control is required for
resetting the password.
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