Toshiba 705T - Manual (Page 224)

Settings 224
Adjusting the Contrast of the External Display
Adjust the contrast of the external display to one of nine levels.
1. In standby mode, press @, select Settings and press J (Select).
2. Select Display Settings and press J (Select).
3. Select External Display and press J (Select).
4. Select Contrast and press J (Select).
5. Close your handset.
A window for adjusting the contrast appears on the external display.
6. Use the side keys ( P/Q) to adjust the contrast, open your handset and press J (OK).