Optoma W351 Mode D'emploi page 56

Appendices
 Use of Keystone
is not recom-
mended.
56
English
Image has vertical flickering bar
Use "Frequency" to make an adjustment. See page 35 for more

information.
Check and re-configure the display mode of your graphic card to

make it compatible with the projector.
Image is out of focus
Adjust the Focus Ring on the projector lens.

Make sure the projection screen is between the required distance.

See pages 18-19.
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 when the projector display mode is set to
16:9 in the OSD.
If you play 4:3 format DVD titles, please change the format to 4:3

in the projector OSD.
If the image is still stretched, you will also need to adjust the

aspect ratio by referring to the following:
Please setup the display format as 16:9 (wide) aspect ratio type

on your DVD player.
Image is too small or too large
Adjust the Zoom Ring on the top of the projector.

Move the projector closer to or further from the screen.

Press "Menu" button on the remote control, go to "Display 

Format" and try the different settings.
Image has slanted sides
If possible, reposition the projector so that it is horizontally

centered on the screen and below the bottom of the screen.
Press "Keystone +/-" button on the remote control until the sides

are vertical.
Use "Display  V Keystone" from the OSD to make an adjust-

ment.