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Really confused: XG-852 set-up

post #1 of 17
2/25/07 at 6:31am
Thread Starter 
I finally got my projector hanging where I want it. I have lined this thing up as close as I can physically using plumb bobs, tape measures, and my laser level/sight.

Set my image position at Zero.
Centered my rasters in the tubes.

Put the green lens on and turned on the PJ. The center of the cross hair is way left and takes the static electronics 98% to get it centered.
This seems wrong.

What am I missing? Is the frame of this projector supposed to be square with the tube?

Clay
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post #2 of 17
2/25/07 at 7:04am
Put the cross on the green at zero.
Lower contrast until you can see into the tube directly.
If the cross is centered then just till the pj until the cross is centered where you want it.
hope that helps.
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post #3 of 17
2/25/07 at 7:17am
Thread Starter 
Quote:
Originally Posted by Bachiano View Post

Put the cross on the green at zero.
Lower contrast until you can see into the tube directly.
If the cross is centered then just till the pj until the cross is centered where you want it.
hope that helps.

I guess I'm still confused. What did I do wrong with this PJ.
If I center the raster in the tube, it projects 4" left of center on the screen. I can't adjust the mount that much to get it correct.
Is it possible the green tube is not aligned properly in the Chassis?

Clay
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post #4 of 17
2/25/07 at 7:20am
did you look inside the tube?
Is the cross centered within the raster with green at zero?
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post #5 of 17
2/25/07 at 7:25am
You need to do phase first to center the test pattern within the raster. A small ruler works nicely for this. You should also take a look at this PG mechanical setup guide; the setup is very similar to the XG. http://www.curtpalme.com/NECPG_MechSetup1.shtm

And good luck setting up the rest of the XG...you'll need it if this your first projector.
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post #6 of 17
2/25/07 at 7:34am
To set phase you need to be feeding the signal you plan to use.
You have to do that for every new signal you plan on using.
ALSO, save the new signal entry so you don't lose all you're hard work.
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post #7 of 17
2/25/07 at 7:38am
Thread Starter 
Quote:
Originally Posted by Bachiano View Post

did you look inside the tube?
Is the cross centered within the raster with green at zero?

I'll pull the lens back off and check.

Clay
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post #8 of 17
2/25/07 at 7:40am
you don't have to take the lenses off - just look in through the lenses.
It will be good enough to see if the cross is centered within the raster.
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post #9 of 17
2/25/07 at 7:47am
if you have a signal you plan to use - you might as well set phase for that signal.
If not set phase anyway -
if you don't know how to set phase. search the forum - I think I've seen threads with pics.
Also download the setup manual. it's in there.
Try post #67
http://www.avsforum.com/avs-vb/showt...=771023&page=3
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post #10 of 17
2/25/07 at 7:56am
Quote:


Now you should have a centered raster, and a centered image within that raster. The next step is to properly phase the internal test signals with that image. To do this, put up the PHASE menu. Adjust the CURSOR PHASE until the VERTICAL bar of the crosshair is dead center in the raster. Store that setting. On some projectors when you enter the PHASE menu you will see a grid test pattern instead of the crosshair pattern. In this instance you will move the C slider adjustment until the center of the grid is moved to the center of the video and raster image. At this point you should have a properly centered raster, image, and crosshair. If anything is off, go back and fine tune as needed.

Phase directions ^
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post #11 of 17
2/25/07 at 9:02am
Quote:
Originally Posted by poolboyclay View Post

I guess I'm still confused. What did I do wrong with this PJ.
If I center the raster in the tube, it projects 4" left of center on the screen. I can't adjust the mount that much to get it correct.
Is it possible the green tube is not aligned properly in the Chassis?

Clay

Mechanical alignment sounds like the problem to me. Either that, or maybe you need to realign the pj relative to the screen. - at least, that's where I'd be looking. Good luck.
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post #12 of 17
2/25/07 at 9:13am
Thread Starter 
Got it guys. Thanks.

I never understood what phase was, and I didn't realize that it was needed for every input.

Once I set the phase to the center of the raster, I shined the cross hairs on the screen at 0 horizontal, and I was 1/8" off center!

That I can live with.

Clay
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post #13 of 17
2/25/07 at 9:51am
You can't move the screen slightly can you? My screen is a wood framed torus that hangs off of a piece of wood drilled to the wall so I can move it horizontally. This definitly made mechanical setup much easier .
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post #14 of 17
2/25/07 at 12:19pm
good - you are welcome.
now - you must have enough give somewhere to twist the pj that little bit?
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post #15 of 17
2/25/07 at 12:45pm
Thread Starter 
Quote:
Originally Posted by Bachiano View Post

good - you are welcome.
now - you must have enough give somewhere to twist the pj that little bit?

Already done!

Moved the front of the projector a total of .010 inches right.

Clay
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post #16 of 17
2/25/07 at 7:34pm
Clay,

Sounds like you need to adjust the mechanical toe in on both the red and blue tubes. If you take off plastic trim around the lenses you'll see that you can remove a screw (or loosen depending on what hole it's set in) then you can tilt the tube in to exactly align the crosshairs on the screen while the electronics are centered
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post #17 of 17
2/26/07 at 1:24am
Phase and RASTER CENTERING.
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