Screen (Grayhawk) Installation Procedure? - AVS Forum
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post #1 of 6 Old 04-06-2001, 04:19 PM - Thread Starter
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I have a Sony 10Ht and just received my 120" 16:9 Grayhawk screen. What is the correct procedure to install it. Step 1. Ceiling mount projector. Step 2. Invoke 10HT test pattern. What steps do I take next? Don Stewart, anyone?

Thank you.
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post #2 of 6 Old 04-09-2001, 07:29 PM
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Your question seems too simple. The screen comes with excellent instructions so just hang the screen up front at the appropriate height, (as determined by the Sony), making sure that it is level.

You then adjust focus and zoom and you're done. Or am I missing something?

Phil
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post #3 of 6 Old 04-10-2001, 05:08 AM - Thread Starter
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Phil:

How do I adjust for yaw and pitch? I have a problem with a slight bow on the bottom edge when projected on a wall that I can't seem to get rid of. Is there a specific procedure for Y & P adjustment?

Thank you.
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post #4 of 6 Old 04-10-2001, 02:24 PM
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Tom -

I just finished doing this over the weekend with a 110" greyhawk. You don't mention which mount you are using. I used the Sony mount, which I have regretted purchasing, even though things worked out in the end.

I first ceiling mounted the projector, leveled it as best I could. (This is where I hated the Sony mount, because it leaves a lot to be desired in terms of yaw and pitch adjustments). I displayed the test pattern on the wall, which looked good and thought about mounting my screen based on the pattern, but decided to use the recommended mounting instead. I'm glad I did.

1. Measure the distance from the top of the ceiling to the center of the lens and from one wall to the center of the lens.
2. Transfer these to the wall where the screen will be mounted. This will be the top center point for the viewable portion of the screen.
3. Assemble the screen frame (w/o material) and find the midpoint of the top portion of the frame.
4. Take the frame and hold it against the wall line up the midpoint of the frame with the wall markings you did in step 2. The wall marked midpoint should be viewable just under the frame. Check for level.
5. The frame has 3 vertical frame supports (at least for my 110") that are predrilled. While still holding the leveled frame against the wall, mark the positions of the predrilled holes on the wall. (I used a small drill bit - gave me a chance to check for studs).
6. Take frame down and remove the vertical supports from the frame.
7. Mount the vertical supports on the wall, checking for plumb.
8. Snap the screen material onto the frame following Stewart's instructions.
9. Mount the frame onto the supports.
10. Turn projector on, display test pattern and adjust projector to fit screen viewable area.

I did this and had no keystoning problems at all. My only problem was getting the image level - which was the mounts problem. It had more play than I would have liked and no good way of adjusting tilt. Once I got the tilt problem worked out, the image was right on target.

A couple of notes: First, you need at least two other people to help you. Use a long level, it will make it easier. I also didn't hit any studs, but the toggle bolts that Stewart provides worked perfectly.

BTW, I played with the idea of using the test pattern to determine mounting position. I'm glad I didn't do it that way, since it turned out that the screen needed to be lower than what the test pattern was showing, even though I didn't notice any keystoning.

Hope this helps!

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post #5 of 6 Old 04-10-2001, 03:58 PM
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You can mount a 110 incher by your self . . . I did.

The instructions that John posted are right on the only changes I would make for a self install are.

Once you have identified the center mount point is, mark where the center rails mounting hole is on the wall with something like a drill bit. BTW the hole is 8 inches on center from the top of the frame e.g. if you were going to mount the screen 2 inches down from your ceiling the mount hole would be 10 inches down the wall.

Drill your hole and insert your drywall anchor if necessary.

Mount the screen to the wall by the top center mounting hole. (I used #10 1 3/4 screws with a heavy duty drywall anchor.

You can now level and plumb the frame easily.

Once you have the frame level and plumb mark the bottom center rail hole.

tilt the frame out of your way and drill install anchor.

screw the bottom center rail in to your wall

If all went well your screen should be level and plumb. Confirm this.

Since the frame is now level and plumb take your drill and use the left and right mounting rails mount holes as the drill guide to create the pilot holes for your anchors.

Once complete remove the screen from the wall and detach the mount rails from the frame and attach them to the wall.

Continue following the provided instructions.

Hope this helps.

regards,

Brian
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post #6 of 6 Old 04-10-2001, 04:16 PM - Thread Starter
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Thanks guys! Your info was exactly what I was looking for.

Your info is extremly valuable to me and hopefully others can benefit from this "primer" too. BTW, I have the Chief mount and it has really good yaw & pitch adjustment capability.
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