JVC CB100 - Manual (Page 70)

Chapter 4—Setup Adjustments
4-18 Hughes-JVC Technology Corporation
4.3.7. Keystone
The Keystone adjustment corrects the lines closest to the screen’s edge.
This adjustment makes lines parallel to the centerline of the test pattern
or square to the screen edge (refer to Figure 4.0-10).
Horizontal (side to side) Keystone Distortion. Use left/right arrow keys.
Vertical (top/bottom) Keystone Distortion. Use up/down arrow keys.
Figure 4.0-10 Keystone (horizontal and vertical)
To correct for horizontal and vertical Keystone Distortion:
1. Select K EYSTONE from the G EOMETRY MENU .
2. Use the left/right arrow keys to correct for horizontal keystone distortion.
Use the up/down arrow keys to correct for vertical keystone distortion.
3. Press E SCAPE /E NTER to exit.