Product data

WN-5220-V Module Level Service Guide
39
Image is keystoned
1. Check all mirrors and verify that they are securely attached
2. If one is not, replace the defective mirror assembly
Displayed image is too small or too
large
1. Make sure that the processor driving the VideoWall is scaling
the video correctly
2. Adjust the Frequency setting in the menu
3. Make sure that the image is positioned correctly on the screen
using the remote control
4. Make sure that the LCD is centered on the screen
5. Verify that the fresnels are in their proper positions
6. Adjust the projection lens. Turn the lens out to make the image
smaller. Turn the lens in to make the image larger.
Active area of the image is
not fully on the screen
1. Adjust image position with the remote
2. Verify that the LCD is correctly seated in the LCD Frame and
that the LCD Frame is fully seated in the guide slots
3. Adjust the LCD position in the LCD Frame with the positioning
screws. Display the built-in test pattern image called Geometry
to help see the edges of the LCDs active area.
4. Replace the LCD module