Join Date: Sep 2001
Location: London, Ontario, Canada
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Optimize.. In what way were you thinking? When you say physical adjustments are you referring to focus, size or something else?
The only need to change the red & blue spacers on the sonys are for better convergence on larger or smaller screens. Stick to the install manual ie. 109inchs throw distance for a 100'' 4:3 screen or 129inchs for a 120'' 4:3 screen (factory setting) Save your self a lot of time and reset every (i mean every setting to the factory reset) This will really make the convergence simple. The spacers should be at their M (medium) setting. Then do the lens focusing and lastly the electrical focus (RED & GREEN Only) do not touch the blue focus, you will only through off your gray scale.
I copied a post that I did some time back, I hope this helps
The procedure described below is for a sony 1271.
BTW: which manual do you have?
I'd like to start a convergence technique thread to see how others on this forum are setting up their projectors.
My first experience setting convergence was with a sony 1020. It being completely analog and having to adjust 50 different pods (dials),it worked as a great learning experience. Some what like learning to drive a standard before getting behind the wheel of an automatic car. The second projector I had was an Electrohome Marquee 8000, this baby was a Cadillac, very very user friendly. What I really liked about it was its detailed user set up menu. I'm sure, the techniques that I learnt from this unit are transferable to other projectors. So,if I miss some thing please fill in the blanks.The first thing you are going to find,(after getting the projector home for the first time) is that when the power is first turned on, and if projector has a menu system you will not be able to read them because the focus will be so far out of wack.
Therefore you will need to set the unit up for the correct distance from screen(see manual for recommended distance). Then manually adjust the focus (ie.lens focus), inside lens first(center of picture) then outer lens second(edges of picture). (THIS IS WHERE YOU NEED TO RESET EVERYTHING TO THE FACTORY SPEC'S)Under each control feature press the < > keys at the same time (do this twice to make sure it's done right) sorry i was not trying to screaming.
Reduce the contrast & brightness and then look into the tube (green) and center the picture(square) in the middle of the raster(round) (ie. make the square fit evenly inside the round viewing surface). Now do the red & blue. You will now need to turn the contrast & brightness back up. With the cross hatch pattern now showing on the screen, aline the center vertical red line of the cross hatch with the center vertical line of the green, it should be close to start with. Now do the same with the blue. The green patterns are always used as the reference(every thing is alined with the green). What happens when the green is all screwed up your thinking? Well this is what I do, I take string,a carpenters level,some tacks,weights for the string and a tape measure. The first thing I do is build a hatch pattern. Find the center vertical and horizontal area of the screen. Stick a tack in the ceiling with the string and the weight attached, this string will hang down the middle of the screen, now if your picture is to be 80inchs wide, then measure 40inchs on both sides of the string and place tacks in the ceiling with more string hanging down from these spots.You now have 3 perfect vertical lines(one in the center and the 2 outer making up what will be the left & right edges of the picture. This will have to be done for the horizontal center, and top and bottom edges. Use the carpenters level on the center string, again measure 30inchs above and below the center string, locating the points where the top & bottom string lines will be placed(which you will have to tack to your walls). The end result will be a perfect grid with which to aline the green cross hatch to. ( Some people use post-it notes instead of the string)
Remember to set all values to the center or middle of their adjustment range, before starting.
Green cross hatch to string alinment
1) size control (vertical & horzontal)
2) linear control (vertical & horzontal)
(hint:use tape measure for cross hatch box size top/bottom & side/side)
You will now need to aline the red to the green, then do the blue to the green (shut the red gun off when working with the blue and the blue gun off when working with the red)
And last is the zone convergence, again red to green then blue to green.
If you need a copy of a dealer install manual let me know
[This message has been edited by Kent Mascotto (edited November 18, 1999).]