As I read it, the GT models require access to the service menu to apply D-nice settings. In GT models, one needs to add or subtract from the numbers presented on your panel to get the desired settings:
To access service menu
only on GT models)
Turn on the TV.
While holding down the Vol - (minus) on the back, right side of the display, press the info button on the remote 3 times.
The service menu appear after a few seconds.
Press 1 on the remote twice to get to the WB-Adjust screen.
Press 7 on the remote until the color temperature says Warm.
Press 3 on the remote to cycle through R-DRV, G-DRV, B-DRV, R-CUT, G-CUT and B-CUT and enter the offset values below (DO NOT CHANGE THE ALL-DRV and ALL-CUT VALUES).
Note: These offsets must be entered for both Color matrixes (HD/SD). You access the different matrixes by using a 1080i/p signal for the HD matrix and 480i/p signal for the SD matrix.
R-DRV: Vol - (minus) 6 times
B-DRV: Vol + (plus) 8 times
B-CUT: Vol - (minus) 5 times
There is no need to access the service menu on ST and VT models....(holding down the Vol - (minus) on the back, right side of the display, press the info button on the remote 3 times....) Don't do it for ST or VT models.
ST and VT models DO NOT NEED to access the "service menu", but only alter the parameters shown in general settings. These numbers are the absolute numbers to which you change any given setting.....NOT (minus), NOT (plus), simply change what you see to D-nice's suggested settings. I copied the original settings on paper for future reference on my panel.