1. Press and hold the power button until the radio turns on.
2. Use the tuning knob to navigate to the "LOCK" setting.
3. Press the enter button to enable or disable the lock.
If the lock is enabled, the display will show "LOCKED".
To disable the lock, press the center of the tuning knob.
The display will then show "UNLOCKED".
Note: If the radio is locked and you do not know the password, you will need to contact the manufacturer to reset the radio.