Applied model:

1. Americas: IFP**50 - Gen 1, IFP**50 - Gen 2, IFP**50 - Gen 3. 

2. Asia Pacific & Africa: IFP**50, IFP**50-2, IFP**50-3.

3. Europe: IFP**50, IFP**50-2EP, IFP**50-3EP.

Please refer either method below:

1.You will need to set combination key to “ON” at Debug menuàOther Settingà Combination key.

Then the touch function can be locked/unlocked by pressing the following front panel buttons in sequence:

VOL+, VOL+, VOL+, SETTING, HOME

 2.You can enter Debug menuàOther Setting then set touch lock to be ON.