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barco_75
Joined: 14 Jan 2009
Posts: 171
Location: Chicago
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| Posted: Wed Apr 01, 2009 12:05 am Post subject: How do I manually center the raster on Barco D708? |
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I've looked at the post for D708 and could not find anything. Is it a pot that I just adjust with a non-metallic screwdriver? What board is it on and what would it be labeled as?
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Elaine Benes
Joined: 25 Apr 2006
Posts: 1416
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| Posted: Wed Apr 01, 2009 1:04 am Post subject: Re: How do I manually center the raster on Barco D708? |
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| barco_75 wrote: | | I've looked at the post for D708 and could not find anything. Is it a pot that I just adjust with a non-metallic screwdriver? What board is it on and what would it be labeled as? |
The adjustments made with non-metallic tools are the width coils. You are supposed to turn all three to the smallest they will go, then adjust the two smaller to the largest one's size. Its important to do this properly for easy convergence and good horizontal linearity.
For mechanical centering you need to match red and blue vertical sizes to green using the the vertical size pots on the vertical board, then match the green vertical position with the red and blue vertical position adjustment pots, near the vertical amplitude pots on the vertical board.
As for how you center the raster horizontally...I'm at a loss...I think you can only do it electronically in the guided setup menu...but I'm only just getting back into the Barco scene myself so I'm pretty rusty...
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barco_75
Joined: 14 Jan 2009
Posts: 171
Location: Chicago
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| Posted: Wed Apr 01, 2009 1:28 am Post subject: |
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Thanks for the tips. I'll give it a shot. However, I really need to know how to center horizontally. That's were I have the biggest issues. I can't even get the raster centered using the electronic controls. Do you have a photo or something pointing out were these pots are? Or what they would be labeled as. There are so many pots on this board, I don't want to miss with the wrong one! I assume the width coil, does exactly what it says, adjust the width of the raster? I assume I would make this adjustment when looking in the installation menu when centering the raster (with the full projected test image in shown on each tube) since I don't have a calibration DVD.
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barco_75
Joined: 14 Jan 2009
Posts: 171
Location: Chicago
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| Posted: Fri Apr 03, 2009 12:27 am Post subject: |
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Ok, so I see the horizontal shift on the focus and shift board. One for Red and Blue. I see the Vertical amplification coils and Horizontal Amplification pots on the deflection board. I believe those are for adjusting the height and width. I didn't see a vertical shift so maybe you were mistaken the Barco's lack the horizontal shift. I think they lack the vertical shift????
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Kiev Savoie
Joined: 25 Oct 2007
Posts: 432
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| Posted: Fri Apr 03, 2009 3:19 pm Post subject: |
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Sorry to hijack the thread, but i am having a similar problem with my BG1208 on an 80" screen. I run out of adjustment on blue before it centers horizontally on green. is there someway i can adjust the projector so i can keep green and blue reasonably close to mid-point? as it is now even with both rasters adjusted to the extreme left and right to meet each other i'm still an inch or so off. if anyone can think of anything i would appreciate it, this is my big project for the weekend and i am a bit stumped.
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Fri Apr 03, 2009 5:02 pm Post subject: |
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| Kiev Savoie wrote: | | Sorry to hijack the thread, but i am having a similar problem with my BG1208 on an 80" screen. I run out of adjustment on blue before it centers horizontally on green. is there someway i can adjust the projector so i can keep green and blue reasonably close to mid-point? as it is now even with both rasters adjusted to the extreme left and right to meet each other i'm still an inch or so off. if anyone can think of anything i would appreciate it, this is my big project for the weekend and i am a bit stumped. |
Have you done lens toe in?
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CRT.
HD done right!
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Kiev Savoie
Joined: 25 Oct 2007
Posts: 432
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| Posted: Fri Apr 03, 2009 9:32 pm Post subject: |
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yeah, i just figured that out. THAT'S WHY every time i try to setup a small screen on a projector I ran into this. I usually used a 100 or 120 inch screen and most projectors come factory set that size screen. live and learn.
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barco_75
Joined: 14 Jan 2009
Posts: 171
Location: Chicago
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| Posted: Sun Apr 05, 2009 4:36 pm Post subject: |
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Is there a vertical adjustment? I'll I can see is a horizontal adjustment on the D708?
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Sun Apr 05, 2009 6:22 pm Post subject: |
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| barco_75 wrote: | | Is there a vertical adjustment? I'll I can see is a horizontal adjustment on the D708? |
Vertical is usually a trim pot. Make sure you know which one if you turn the wrong one you can screw things up. Ask Curt specificaly which one to turn.
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