Optoma TX783 User's Manual - Page 51

Appendices Image is out of focus  Make sure the lens cap is remove.  Adjust the Focus Ring on the projector lens.  Make sure the projection screen is between the required Stan- dard lens 3.9 to 41.0 feet (1.2 to 12.5 meters)/Tele lens 13.1 to 58.0 feet (4.0 to 17.7 meters). 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. If you play 4:3 format DVD title, please change the format as 4:3 in 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 or projector panel, go to "Display  Format" and try the different settings. Image has slanted sides Noottee  If possible, reposition the projector so that it is centered on the  Use of Keystone is screen and below the bottom of the screen. not recommended.  Press [Keystone] button on the remote control or press [ / ] on the projector panel, until the sides are vertical on the remote control. Image is reversed  Select "Setup  Projection" from the OSD and adjust the projection direction. English 51