Optoma Optoma EP725 - Manual (Page 27)

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Problem : Image is out of focus
4 Adjust the Focus Ring on the projector lens.
4 Make sure the projection screen is between the required distance
3.94ft.(1.2m)~ 32.81ft.(10.00m) from the projector.
Problem : The screen is outstretched when displaying 16:9
DVD.
The projector itself will automatically detect 16:9 DVD and adjust the
aspect ratio by digitization to full screen with 4:3 default setting.
If the projector is still outstretched, you will also need to adjust the
aspect ratio by referring to the following:
4 Please select 4:3 aspect ratio type on your DVD player if you are
playing a 16:9 DVD.
4 If you can’t select 4:3 aspect ratio type on your DVD player, please
select 4:3 On Screen-Display(OSD) function of the projector for
your display.
Problem : Image is reversed.
4 To select “Management” from the OSD and adjust the projection
direction.
Problem : Lamp burns out or makes a popping sound
4 When the lamp reaches its end of life, it will burn out and may
make a loud popping sound. If this happens, the projector will not
turn back on until the lamp module has been replaced. To replace
the lamp, follow the procedures in the “Changing the Lamp”.
Appendices