Sony PCG-GRT270G - Manual (Page 248)

How do I change the video resolution on the TV screen?
The video may not appear on the entire TV screen if your computer resolution is set larger than 1024 x 768. Adjust the
video resolution to 1024 x 768 or smaller.
If you are using the A/V Out jack, plug the audio-video (AV) cable into the computer before you start the computer.
To change the video resolution, follow these instructions:
1. Right-click the desktop, and select Properties from the shortcut menu. The Display Properties dialog box
appears.
2. Select the Settings tab.
3. Move the screen resolution slider to the left to reduce the size and to the right to increase the size of the video
resolution.
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