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Post by Deleted on Apr 8, 2015 11:23:32 GMT -5
I am going to try to connect the focus yoke of my 909 to my 9500. Going through the docs on this site I get the below pinout for the Marquee and the Barco. Now because static focus is vertical and dynamic focus is horizontal I came on the following pin mapping. I came to these pin numbers by looking in the schematics and a little number is written next to the connector symbol on the Marquee docs for focus and astig. With the Barco there was a layout of the motherboard. marquee: barco 909 focus p101 pin1 = R-DYN-H pin7 pin2 = R-DYN-L pin9 pin3 = R-STAT-H pin3 pin4 = R-STAT-L pin5 pin5 = R-TEMP-L earth pin1 ? pin6 = R-TEMP-H astig p2 pin1 = RY-STIG-L pin2 pin2 = RY-STIG-H pin4 pin3 = RX-STIG-H pin8 pin4 = RX-STIG-L pin6 barco cine9: focus and astig J155 pin1 = earth pin2 = 4PYL-R pin4 = 4PYH-R pin6 = 4PXL-R pin8 = 4PXH-R pin3 = FVH-R pin5 = FVL-R pin7 = FHH-R pin9 = FHL-R pin10 = 6P pin11 = 6P pin12 = 6P pin13 = 6P Now two question. First see anything wrong with this? Second I think of connecting the earth pin on the barco yoke coil to pin 5 on the Marquee focus coil. Pin 5 and pin6 are for the thermistor and are normally left unconnected but pin5 is the earth side of the thermistor. I also plan on connecting the unused astig pins to the earth too. This is because they will charge and can arc. Correct? Anyway I have already made it but wanted to check with you guys to be sure. I used a wire from a Sony 1292 yoke that is 9 pins so I left 10 to 13 (6 pole astig) unconnected.  |
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Post by mastertech on Apr 8, 2015 15:50:35 GMT -5
Everything looks fine and yes to barco coil gnd to marquee pin 5. Same for unused coils.
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Post by Deleted on Apr 8, 2015 17:22:25 GMT -5
Everything looks fine and yes to barco coil gnd to marquee pin 5. Same for unused coils. Thanks. I hope these coils will give better focus than the Thomson yokes. I also have the 1292 yokes but hear different stories about them. Going to try tomorrow how it looks! |
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Post by mastertech on Apr 8, 2015 17:37:28 GMT -5
Keep us updated. I'm curious of your results.
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Post by Deleted on Apr 9, 2015 6:28:59 GMT -5
Ok first test not good. The image is turned 45 degrees and I need 100 focus.
When I measured the resistance of the vertical yoke it was 3 Ohm while the Thomson measured 41,3 Ohm. I tend to conclude the windings are far to few to work with the 9500?
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Post by Deleted on Apr 9, 2015 8:37:43 GMT -5
Seems fixed. I found a doc where the low and high pins on all the cols are reversed. My hypotheses is that someone reversed these coils because the inside of the housing should be reversed but that is to much trouble. They just reverse the pins and turn the deflection coil 45 degrees I guess.
The sony 1292 coils do focus now. Will have to test the 909 coils again.
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Post by mastertech on Apr 9, 2015 9:17:53 GMT -5
You can try to reverse the coils if you like. You have to keep trying various things until you get them just where you want them. There is no specific rule of thumb here. And we already know they work in the Marquee since others are using them.
And yes, I know I am answering your question from somewhere else. Where do you think you are going to get the most help, LOL.
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Post by Deleted on Apr 9, 2015 10:51:34 GMT -5
You can try to reverse the coils if you like. You have to keep trying various things until you get them just where you want them. There is no specific rule of thumb here. And we already know they work in the Marquee since others are using them. And yes, I know I am answering your question from somewhere else. Where do you think you are going to get the most help, LOL. Yes the other forum seems dead. No docs there makes it impossible to do something yourself. I tested the barco coils again but they seem out of range anyway. The sony might work I have to compare the corners now. Also something I do not understand is. They are taking windings of the coils to match the Thomson. Why not leave it the way it is but find matching caps for the focus board. As I understand the cap matches the inductance. |
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Post by Deleted on Apr 9, 2015 11:13:59 GMT -5
This is the wiring that seems to work.  |
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Post by mastertech on Apr 9, 2015 12:01:56 GMT -5
When I measured the resistance of the vertical yoke it was 3 Ohm while the Thomson measured 41,3 Ohm. I tend to conclude the windings are far to few to work with the 9500? I would not be overly concerned with this just yet. That variation could be one of the factors as to why the barco coil has better focusing ability. |
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Post by mastertech on Apr 9, 2015 12:04:28 GMT -5
I tested the barco coils again but they seem out of range anyway. Have you checked the coil orientation, meaning, which coil is closest the deflection coil(static or dynamic) in the marquee coil pack vs the barco coil pack? |
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Post by Deleted on Apr 9, 2015 15:53:35 GMT -5
Good point. I check that tomorrow.
I put the 1292 yoke back and did some simpel testing and It does seem there is more controll on the focus dot.
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Post by Deleted on Apr 10, 2015 4:53:38 GMT -5
The Barco 909 coil had a different number on green so I guess it is true that in the green housing they reversed the magnet. This green 909 coil works good. So I think there are two possibilities.
1-I have to reverse the coils in the housing
2-the permanent magnet of the 909 coil I tried first was off
I will now test that last option by trying the third 909 coil.
Ok last test done. It is probable reversing in the housing.
On more test done by reversing the yoke in the housing and I have to conclude that it must be the permanent magnets of blue and red 909 yokes being off. The green one is the only one that works.
So I conclude that if I do not find a way to shift them more to the deflection yoke I probable better use the 1292 yokes. I did not see any obvious benefits on the green 909 yoke too.
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Post by Deleted on Apr 10, 2015 15:14:22 GMT -5
And a short test of the 1292 yokes. They work muh easier. After half an houre magnetics on green the picture is sharper than I had it before. Shows also in a testpicture. Seems to be more light or pop too.
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Post by mastertech on Apr 10, 2015 15:29:10 GMT -5
Good to hear. What do you have for astig control now?
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