CurtPalme.com Home Theater Forum

[Audio_Geek_00]

After re-tubing my PJ I have been working on the focus and I have found that I can't get the red or blue to focus uniformly across the screen. It would seem that the lenses need to be either towed in or out. If I get the left side focused on the red the right side is just a touch out of focus. the same is true for the blue only opposite . While some PJs have the ability to tow the lenses slightly the 1252 does not seem to have that ability. Has anyone used shims to correct that? Or if not, is there another way to make that adjustment?
TIA,
Tim

[ecrabb]

Are the plastic lens spacer rings still intact on your machine? If that spacer ring is still there, there are three different detents on the lens mount, and a nipple on the lens shim. There's one for a small screen, medium, and large. For a 96x54 (110-inch diagonal) 16:9 like I had, it put the projector right in the range where it was the ideal throw for the "M" CRT spacers and lens spacer rings. The focus was dead-on side-side. What screen size are you using, and how are those lens spacers set?

I set up a 1252 at a buddy's house on a smaller screen… I think it was about 80 or 84, and that put the toe-in angle and focus pretty close to the bottom of the "M" range. We did the spring/spacer mod (see below), and then I found some thin nylon washers to shim the lenses a bit to nail the focus down. So, yes - it is possible.

http://www.curtpalme.com/Sony125x_SpacerMod1.shtm

SC

[Curt Palme]

I may have the right spacers here still. I threw a bunch out since no one ever needed them, but let me know what size you need.

[Curt Palme]

I may have the right spacers here still. I threw a bunch out since no one ever needed them, but let me know what size you need.

[Audio_Geek_00]