I have a problem with my plv-z2 I can not quite get around. I can get my image square on the top,bottom, and left edges. But the right edge always seems to bow in at the bottom. Keystone correction brings in both sides and just makes the situation worse. Does anyone have any idea what may be causing this problem or have any suggestions on how to correct this?

Sean

Greetings

Sounds like the projector is not square with the screen.

regards

If the unit has Lens / Image shift, is it maxed to the extreme in the Vertical domain? You might be riding on the peripheral of the lens, and the mechanical properties of the glass curvature is creating the anomolie you are seeing.

If you have to use Keystone at all, even one click, you are not mechanically in the correct spot.

Thanks Coyotes, I actually have taken the projector down and have it centered with the screen. I now have no left to right lens shift and only a little vertical shift. The top, bottom and left edges are perfectly square, but I am still having issues with the right edge curving in from top to bottom. Is there anyway the lcd's need to be realigned or anything? I am going to play with the image size again, but id I remember right magnifying/reducing the image did not effect the results.

Greetings

sometimes people find out that the wall where the screen is mounted is not as flat as they think nor is it square to the room.

Regards

Thanks Coyotes, I actually have taken the projector down and have it centered with the screen. I now have no left to right lens shift and only a little vertical shift. The top, bottom and left edges are perfectly square, but I am still having issues with the right edge curving in from top to bottom. Is there anyway the lcd's need to be realigned or anything? I am going to play with the image size again, but id I remember right magnifying/reducing the image did not effect the results.

Is the lens in the middle of the PJ or offset?
You say you have just a bit of Vertical shift. Is this mechanically corrected with a thumbwheel (as in, how do you know you have just a little) or is it menu driven and you are only a few increments in the plus range?

As Michael TLV indicates, is the PJ perpendicular to the screen? How do you know? Did you measure the center of the screen, and from there use a laser-assisted 90 degree level to find where the lens center should be? If so, did the laser track at a 90 degree angle from the wall, or did it travel at a slight angle?

Is this a fixed screen or electrically descending? A lot of screen that are tab tensioned are not geometrically proportioned and many have "hourglass" shaped reflective areas.

If you are confident all of the above is affirmative, then the PJ may have an issue with the light path / lens interface. It wouldn't be panel alignment, as the panels are aspect ratio shaped and can't make a "bow". Only the lens has curvature, and that is your candidate for error.

The lens is offset. I have accounted for that and have the projector offset so the lens is positioned to be in the center of the screen with no horizontal lens shifting. All lens shifting is done with a thumb wheel. I did have to do some vertical lens shifting to raise the image a little. I am not using any keystone correction at all, trying to avoid that at all costs.

When the projector is not parallel to the screen the top and bottom edges are not level. Right now I have measured the distance from the top of the screen to the floor as well as the bottom of the screen to the floor and everything appears to be symmetrical.

The screen if fixed. The top and bottom measure to the same width and the sides measure to the same width.

So I am thinking that the lens is causing the issue, I will check out the light path and see what I can do. Thanks for all the help. Probably going to upgrade to a newer projector soon anyway. :)