How to hook up RGB & Sync wires on a K7203 to a Sega Outrun

john2654

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How to hook up RGB & Sync wires on a K7203 to a Sega Outrun

I think my wires are messed up on my Sega Outrun. First pic shows my monitor. It does this really fast top to bottom scrolling. I think the sync wires are messed up. The second pic shows how the video wires are coming off the game board. The third pic shows the monitor chassis. How is the wiring suppose to be hooked up on a K7203? The wires could've been moved on either side to the wrong position.
Thanks!
 

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What is that purple wire in the middle of the 3-pin connector connected to? it shouldn't be connected to anything.

Otherwise, it looks like it's wired up correctly per the manual's wiring diagram.

Has it been capped?
 
When I got it, the purple wire was shoved in with the white wire. Didn't know if the blue w/white strip and the white wire were switched around or something. Isn't the blue wire w/ white stripe in the ground position coming off the game board?

Just did a cap kit on it.
 
Sync varies depending on the game and sometimes on the monitor. From left to right in that third pic the pins are red, green, blue, ground, positive horizontal, positive vertical on the 5 pin connector. Ground, negative horizontal, negative vertical on the 3 pin connector. First try moving the -vertical to the - horizontal. If that fails, tie the -vertical and -horizontal wires together. Still no luck, move the sync wires to the positive vertical and horizontal pins and repeat the process. The ground pins share a common trace, so no need to move the ground wire.
 
Looking at the wires coming off the game board, white appears to be sync and blue/white appears to be ground. Am I wrong here, and the sync wire is in the wrong place on the monitor?

That's what I thought. If I leave the game board end alone, should I swap the blue/white wire & the white wire?

Wires coming off the game board (from right to left) should be red, green, blue, ground, sync.
Right?
 
That's what I'm thinking. However, I hesitate to offer any advice now, because the last time I mixed up ground and sync wires on a monitor it blew a varistor on the game board. So, I will crawfish out of this thread and leave it to someone who knows the game and monitor better than I do.
 
From the manual:

* Connector H - VIDEO
____________
| 1 2 3 4 5 6|
~~~~~~~~~~~~
Pin 1 - Video Ground
Pin 2 - Video Ground - WHITE
Pin 3 - Video Sync - BLUE/ WHITE
Pin 4 - Video Blue - BLUE
Pin 5 - Video Green - GREEN
Pin 6 - Video Red - RED

So DON'T switch blue/ white wire & white wire
 
From the manual:

* Connector H - VIDEO
____________
| 1 2 3 4 5 6|
~~~~~~~~~~~~
Pin 1 - Video Ground
Pin 2 - Video Ground - WHITE
Pin 3 - Video Sync - BLUE/ WHITE
Pin 4 - Video Blue - BLUE
Pin 5 - Video Green - GREEN
Pin 6 - Video Red - RED

So DON'T switch blue/ white wire & white wire

Which is why I said it looked right according to the manual. :rolleyes:

If you still have that purple wire connected to the white, take it out. The K7203 won't sync properly with it jumpered to vertical...
 
I guess I am accustomed to seeing pinouts arranged the same way monitor pins are arranged. That is, r g b ground sync sync. If the purple wire was connected with the white, then sync was tied to ground. No clue what the result might be.
 
R, G, B, Ground hooked up correctly. Where does the sync go?
I tried -H sync, -V sync, both - sync, both + sync... Same results. I guess it might be damaged because someone had that purple wire grounded to white wire. There is a jumper on the board that says HOR POS and it is off. Pins 1-2 = L, Pin 2-3 = R. Whatever that is for.
 
That's what I'm thinking. However, I hesitate to offer any advice now, because the last time I mixed up ground and sync wires on a monitor it blew a varistor on the game board. So, I will crawfish out of this thread and leave it to someone who knows the game and monitor better than I do.

Tested monitor in another game and it works fine. It must've blew something on the game board because sync was plugged into the monitor ground pin. How did you fix the varistor?
 
sync

First i would ohm out the sync wire from monitor plug to edge connector to see if that is fine and then i would check the pin in the edge connector and see if it is not pressed in and not making connection. Use contact cleaner on edge connector and retry also.
I think outrun is a jamma board. if it is can you subsitute another board and see if your problem remains. if goes away then your board is at fault.
 
Just curious, as I didn't see it mentioned...... did you try to adjust anything on the chassis ?
Hold, Linearity, etc. (VR501, VR401, etc)

There is a jumper on the board that says HOR POS and it is off. Pins 1-2 = L, Pin 2-3 = R. Whatever that is for.

That would be for shifting the entire image Left or Right. (horizontally)

If the little purple wire on the chassis were jumpered over to anything it would be to the Blue/White. (tieing the sync together)
 
Just curious, as I didn't see it mentioned...... did you try to adjust anything on the chassis ?
Hold, Linearity, etc. (VR501, VR401, etc)



That would be for shifting the entire image Left or Right. (horizontally)

If the little purple wire on the chassis were jumpered over to anything it would be to the Blue/White. (tieing the sync together)

Yeah, I tried messing with every knob on there. The monitor works fine in other machines. When I first received this Out Run the purple wire was jammed in with the ground wire/ pin, which probably did some damage to the video board.
 
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