Pinout help please?

[Owain]

I'm in the process of sorting the wiring in my cab and have become a little confused by one of the pins on the jamma connector. According to jamma pinouts pin E should be for -5v but mine is wired to the +5v 15A connection on the power supply. Can someone clear this up for me as to whether that is correct or not, thanks.

 

[forcefulfil]

PIN E is indeed -5V

http://image.pinout.net/pinout_audio_files/connector_pinout.php?image=jamma-pinout.gif&pinout= JAMMA pinout

 

[Owain]

Thought so, is there any possible reason as to why it would be wired to +5v instead? Or can it cause any damage by being done this way?

 

[Macro]

unless you are using a really old PCB (with three rail components) then -5 is typically only used for the sound amp.

in this case the most likely outcome is that you get no sound

so definitely should not be wired to 5v (unless you have one of those negatron things in line with it that convert +5v to -5v)

 

[Owain]

Ok thanks guys. Just want to make sure I do the job right.