K7203 with 60-in-1 Screen issue

[pincoma]

I have a K7203 that I'm hooking up a 60-in-1 to.
I have my red, green and blue connected properly according to the manual.
The jamma harness only has "sync" wire coming out of it.  I have this on the H/VCOMP which is pin 6.
I get the screen with correct colors, but the image repeats itself across the screen and seems to be scrolling [from long side to long side].
How to fix?
Do I need to have this wire loop to pin 10 also which is -H/VCOMP?

I'm a pinball guy dabbling in the video world so any help is much appreciated.

[pincoma]

Does it require video ground to the jamma harness?
my harness didn't have that wire preinstalled.

[grantspain]

you need to connect jamma sync  to the negative h sync pin on the chassis

[qrz]

dip switch 2 sets the sync freq .

"off" for standard resolution (15.734khz)

"on" for use with vga monitors , etc

note: pwr down before changing setting


have done several of these conversions for a route operator ...........