ViewSonic Pro9000 - Image has vertical flickering bar; Image is out of focus; The image is stretched when displaying 16:9 DVD title; Image is too small or too large

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Image has vertical ickering bar
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Use “Frequency” to make an adjustment. Refer to the “VIDEO/AUDIO |
Computer Mode” section for more information.
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Check and recongure the display mode of your graphic card to make it
compatible with the product.
Image is out of focus
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Make sure the lens cap is removed.
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Adjust the “Focus Ring” on the projector lens.
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Make sure the projection screen is within the required distance of 4.1-16.4
feet (1.3-5.0 meters) from the projector.
The image is stretched when displaying 16:9 DVD title
When you play anamorphic DVD or 16:9 DVD, the projector will show the best
image in 16: 9 format on projector side.
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If you play 4:3 format DVD title, please change the format as 4:3 in projector
OSD.
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If the image is still stretched, you will also need to setup the display format
as 16:9 (wide) aspect ratio type on your DVD player.
Image is too small or too large
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Move the projector closer to or further from the screen.
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Press “Menu” on the control panel. Go to “SETTING” --> “Aspect Ratio”and
try the different settings.
Image has slanted sides:
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If possible, reposition the projector so that it is centered on the screen and
below the bottom of the screen.
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Use “SETTING” --> “V Keystone” from the OSD to make an adjustment.
Image is reversed
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Adjust the “Projection” to correct it. Refer to the “SETTING” section for more
information.