49NU7100 front colour options

[Serdarland]

Hi
İ just recieved a message on my tv that i need to set front color options.

İt says ‘please go in to service mode and setup belpw options - type local set front colur options

Some how i opned service mode but couldnt find how to do it.

Please help

[Serdarland]

I have found the main bord code.

49A6AU0NN