Subject: Re: TECH: Donkey Kong power to aux (video) board Date: Sun, 19 Sep 1999 19:27:00 +0000 From: Scott Brasington Organization: Braze Technologies Newsgroups: rec.games.video.arcade.collecting References: 1 You need either to connect power to both sides either by connecting both P3 and P9 to the power supply (this is how the cabinet is that I have), or you need a short jumper cable that connects P4 and P12, then you can supply power to either side or to the edge connector. According to the DK wiring diagram: The pinout for P4 and P12 is 1,2,3,4: -5V 5,6,7,8: GND 9,10 : +5V The pinout for P3 and P9 is: 1,2,3 : GND 4,5 : +12V 6,7 : +5V 8 : -5V 9 : +24V (only used for coin counter). I've not found a source for the short little rainbow colored cable that is sometimes used to connect these boards. But a few of the boards I own came with them attached. Andrew Wilson wrote: > > So, I just picked up a Donkey Kong PCB set. It's a two board set - one > is marked as the CPU board, and the other is marked as the video board. > > The CPU board has an edge connector, which I've wired up to a JAMMA > adaptor. The *only* connection between the two boards is via two ribbon > cables at the bottom of the boards, marked P1 and P2. > > I think I'm missing some cables, because the video board only has a > ground connection (via the ribbon cables), but no power. > > MY QUESTION: > How is power (+/-5V, 12V) distributed to the second board? It doesn't > look like it's carried through the ribbon cables - is it supposed to be? > > I notice that there are two connectors (P9 and P12 on the CPU board, P3 > and P4 on the video board). These connectors are connected to the power > rails on each board, so I'm thinking that I'm going to have to make some > cables to connect these two connectors, to carry power to the second > board. I have some spare Molex connectors, which I can use if necessary. > > Thanks for any help! > > -- > > Andrew Wilson > Seattle, WA > http://members.home.com/andrewwilson/arcade