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Author Topic: U2000 signal input connector sequence?  (Read 691 times)

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asantora

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U2000 signal input connector sequence?
« on: January 31, 2018, 10:23:48 pm »
Picked up a 25 inch u2000 that doesnít have an video input connector. Canít locate a manual online anywhere for this model. Anyone have one? Before I mess something up by assuming, can someone please confirm the input signal / pin setup?  It appears to have a 6 pin connector, spacer, 3 pin connector.

Thank you!!




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asantora

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Re: U2000 signal input connector sequence?
« Reply #2 on: February 01, 2018, 07:19:20 am »
Ken,  thank you very much. I see that thereís ground, vertical hold and horizontal in two places. I suppose I can connect just to one of the two locations as they are interconnected. This that correct? Thanks again, Iíve been looking everywhere for this.


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Ken Layton

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Re: U2000 signal input connector sequence?
« Reply #3 on: February 01, 2018, 10:05:22 am »
No, there are two different types of sync inputs and whoever drew the schematic left off the + and - symbols.

The two sync inputs farthest away from the color inputs are the negative sync inputs (-Vert and -Horiz).

The two sync inputs closest to the color inputs are positive sync inputs (+Vert and +Horiz).

JAMMA games use negative sync.

asantora

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Re: U2000 signal input connector sequence?
« Reply #4 on: February 01, 2018, 11:36:33 am »
Sir, you are a wealth of knowledge. I appreciate you very much


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asantora

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Re: U2000 signal input connector sequence?
« Reply #5 on: February 01, 2018, 03:50:52 pm »
Looking pretty good!!!


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asantora

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Re: U2000 signal input connector sequence?
« Reply #6 on: February 01, 2018, 04:24:33 pm »
Any ideas what screen g4 is on the flyback? Mine is glued


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Ken Layton

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Re: U2000 signal input connector sequence?
« Reply #7 on: February 01, 2018, 09:50:29 pm »
That's the SCREEN control. Think of it like a coarse brightness control. Normally you don't need to adjust it.

lilshawn

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Re: U2000 signal input connector sequence?
« Reply #8 on: February 02, 2018, 02:00:05 am »
you might want to crank DOWN the contrast a tad, you blue is bleeding out a bit.

asantora

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Re: U2000 signal input connector sequence?
« Reply #9 on: February 02, 2018, 08:55:41 pm »
Shawn, good eye. When I turn down the contrast, the display is very dim. Iíve cranked the brightness, only to go so far, I then tweaked the screen control / coarse brightness, but it washes out everything. Iíve been reading and think I might need to check R111 and R811, does that sound right?


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Ken Layton

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Re: U2000 signal input connector sequence?
« Reply #10 on: February 02, 2018, 10:10:18 pm »
you might want to crank DOWN the contrast a tad, you blue is bleeding out a bit.

NO. You want to turn down the "Blue Cutoff" control on the neck board. It's just a tad bit too high causing the blue color to bleed a little.

lilshawn

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Re: U2000 signal input connector sequence?
« Reply #11 on: February 02, 2018, 10:17:03 pm »
don't forget, this is 20 year old technology, it's not going to be a bright as modern flatpanel tv's and whatnot.

if you can keep your spurs from jingling... you can turn it back up as it was before.... but go to your neckboard and turn down the blue "cutoff" a teeny tiny bit. that may clean up your bleeding.

asantora

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U2000 signal input connector sequence?
« Reply #12 on: February 02, 2018, 10:56:37 pm »
Damn you guys are spot on. Prior to reading this message, I over tweaked things. Read this thread, went back to basics and tweaked from there and itís looking insanely good. Thank you so much!!


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lilshawn

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Re: U2000 signal input connector sequence?
« Reply #13 on: February 03, 2018, 03:56:27 pm »
 :cheers:

  
 

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