If the Control Lock is enabled, a notification message will appear on the screen.
If you have enabled Control Lock in Settings, all buttons except the Power and the Settings buttons will be disabled.
What is the Control Lock?
Try this
How to lock buttons
1. Press the Settings button on the control panel.
2. Use the arrow button to move to Control Lock, and then press OK.
3. Use the arrow button to select Enable and press OK to enable Control Lock.
Pressing other buttons with Control Lock enabled will show a notification message.
How to unlock the buttons
1. Press the Settings button on the control panel.
2. Use the arrow button to move to Control Lock, and then press OK.
3. Using the arrow, select ‘Disable’ and press OK to unlock buttons.
This guide was created for all models, so the images or content may be different from your product.