If the GT-6B s display becomes difficult to read due to current lighting conditions, use the following procedure to adjust the displays contrast:
1. Press UTILITY twice.
2. Turn the PATCH/VALUE dial to adjust the displays contrast.
3. Press EXIT to return to the Play screen.
1. Press UTILITY twice.
2. Turn the PATCH/VALUE dial to adjust the displays contrast.
3. Press EXIT to return to the Play screen.