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Main => Main Forum => Topic started by: eggedd2k on June 20, 2005, 05:38:20 pm

Title: Will a coin door operate ok with a jpac?
Post by: eggedd2k on June 20, 2005, 05:38:20 pm

i've got a jamma cab with an electronic coin mech and credit board. obviously this all wires up to the jamma connector.  i'm planning on putting a jpac in it to connect my mame computer up.

my question is will the coin mech still function (and give credits) to the mame computer via the jpac without any changes being done? 

Title: Re: Will a coin door operate ok with a jpac?
Post by: AlanS17 on June 20, 2005, 05:45:00 pm

Yes, but the coin counter won't function properly.

Title: Re: Will a coin door operate ok with a jpac?
Post by: wpcmame on June 20, 2005, 05:59:07 pm

Quote from: eggedd2k on June 20, 2005, 05:38:20 pm

i've got a jamma cab with an electronic coin mech and credit board. obviously this all wires up to the jamma connector.

Title: Re: Will a coin door operate ok with a jpac?
Post by: pcb on June 21, 2005, 01:56:49 am

Quote from: wpcmame on June 20, 2005, 05:59:07 pm

The JPAC doesn't supply 12V. If the coin mech gets its power from the jamma connector you need to connect it to another source.

Um.

Title: Re: Will a coin door operate ok with a jpac?
Post by: eggedd2k on June 21, 2005, 02:40:09 am

i thought the coin door was powered directly via the PSU in the cabinet? i'll have to trace the wires.  i dont really want to have to do any soldering or modding to the wiring.

Title: Re: Will a coin door operate ok with a jpac?
Post by: eggedd2k on June 21, 2005, 04:28:46 am

thinking about it, surely the coin door gets it's 12v directly via the PSU - not via the jamma edge connector

Title: Re: Will a coin door operate ok with a jpac?
Post by: wpcmame on June 21, 2005, 07:02:15 am

Quote from: eggedd2k on June 21, 2005, 04:28:46 am

thinking about it, surely the coin door gets it's 12v directly via the PSU - not via the jamma edge connector

Sorry I messed it up and remebered wrong.

In my cabinet the coin mech is attached to the 12V on the jamma connector (which ofcourse comes from the PSU). Was probably easier to draw all cables from the coin mech to one place.

My problem was that the coin mech alone didn't provide enough load for the PSU to work properly. Therefore I disconnected the cabinet PSU and draw a cable from the PC PSU to the JPAC. On the JPAC there is no screw connetor for the 12V so that is why I soldered the cable directly on the JPAC.

Title: Re: Will a coin door operate ok with a jpac?
Post by: AlanS17 on June 21, 2005, 08:50:58 am

I didn't think I would have enough load on mine but apparently I did after all. Never caused me a problem.

Title: Re: Will a coin door operate ok with a jpac?
Post by: eggedd2k on June 21, 2005, 10:54:28 am

i've just had a word with ultimarc. they said that i should check the voltage on the two coin inputs on the jamma connector. they said that it needs to be no higher than 5volts.

Title: Re: Will a coin door operate ok with a jpac?
Post by: pcb on June 24, 2005, 10:00:54 pm

Quote from: eggedd2k on June 21, 2005, 10:54:28 am

i've just had a word with ultimarc. they said that i should check the voltage on the two coin inputs on the jamma connector. they said that it needs to be no higher than 5volts.

Why would the coin inputs need voltage at all!.  It's just a switch, no?
Just like a standard button. The input (coin input) is ogically held high by the gameboard, then temporarily grounded to go low and tell the board a coin was entered.  This should be the same with anything plugged into a JAMMA harness.

Am I missing somthing here?