Where do I test voltage in a Nintendo cab?

jbarket

New member
Joined
Dec 21, 2009
Messages
12
Reaction score
0
Location
Little Rock, Arkansas
Hey guys,

So you'll have to forgive the beginner question. I need to check the voltage on a DK cab, but I can't figure out what's going on here. I've looked around, read a few articles and watched a couple of videos. All of them made perfect sense, but when I got out the old multimeter and took that monster out of my cab, I'm totally lost.

There are two pieces... a giant thing on the left where the PCB actually plugs in, and a smaller box on the right that connects to the power cord itself. They're connected by a molex connector.

Anyway, I can't find anything obviously labeled live/neutral/ground, let alone 5v/12v. Any advice on what I'm looking at?
 
Check right at the PS first then at the board it's self, the following should get you where you need to be.

Nintendo "Donkey Kong" Power supply "PP-7A" & "PP-7B"

10 pin connector to Video

1 Brown –5v
2 Red –5v
3 Orange –5v
4 Yellow –5v
5 Green Ground
6 Blue Ground
7 Purple Ground
8 Gray Ground
9 White +5v
10 Black +5v

9 pin connector to CPU

1 Brown Ground
2 Red Ground
3 Orange Ground
4 Yellow +12v
5 Green +12v
6 Blue +5v
7 Purple +5v
8 Gray –5v
9 White +24v (meter)

7 pin connector to sound

1 Brown +16v
2 Red +16v
3 Orange Ground
4 Yellow Ground
5 Green +12v
6 Blue +5v
7 Purple –5v

AC power input is 100 vac

Donkey Kong Jr. uses PP-7A (TKGU-08-00)

Donkey Kong 3 uses PP-7B (TKGU-18-01)
6 pin connector

Ground
Ground
+12v
+5v
+5v
–5v
 
So, now that I know what the pins are, I assume I can just disconnect the board from the PSU and stuff my leads in there.

Thanks a lot for your help. This thing is so monstrous compared to any switching PSU I've seen I had no idea where to start.
 
Back
Top Bottom