John Bennett
Senior Member
[ukvac] Re: Tech : JAMMA Cab - Further Info.
Do the coin mech lights come on ?, if not then you have blown the +12v
supply which would be why there is no sound also.
Frank.
At 02:05 27/10/99 -0700, you wrote:
>Thanks for the advice received so far
>ref. the lack of coin input and sound output
>on my JAMMA Cab.
>
>I have checked the earth connections and there does
>not appear to be a problem there.
>
>I have not yet had chance to check the fuses in the PSU
>but would like to confirm that, everything else works OK, the
>games come up on screen and joystick/buttons are OK. It is
>purely the fac that there is no sound and coins/credits
>are not accepted.
>
>Something else to mention is that each time I reset
>the machine at, when powered back up 1 Credit is automatically
>available for play on several PCBs where normally this
>doesn't happen. This happens on Major Title and Power Spikes
>(naff games I know!)
>
>It is almost as if 1 credit / coin is being registered
>when the power is switched on.
>
>Immediately before this problem occurred, I had ben changing
>the Major Title PCB for the Power Spikes PCB. Upon first power
>up with the Power Spikes PCB installed, no display came up
>and a high pitched whining noise was emitted from the cabinet.
>
>I detached and carefully re-attached the JAMMA connector
>and it powered up OK after that but without sound and
>coin input. These 2 PCBs have since been tested in my
>other, older JAMMA cabinet and they work fine in every respect
>so the PCBs are not damaged.
>
>Is it possible that by mis-aligining the JAMMA connector
>I could have caused this problem? Unfortunately there is a
>small amount of leeway when connecting which in its worst case
>could have led to each pin being connected to the one adjacent
>to its proper position e.g. PCB Pin 5 being attached to Jamma
>connector Pin 4.
>
>Sorry to ramble on, I'm just hoping that this info. may
>shed further light on the problem.
>
>Thanks Again
>
>
>Jason Howle
>
>
>
>------------------------------------------------------------------------
>Java or juggling?. Everybody learns something at Learn2.com. Where
>you'll find thousands of free 2torials, affordable online courses, and
>useful tips for everyday life. http://clickhere.egroups.com/click/964
>
>
>eGroups.com home: http://www.egroups.com/group/ukvac
>http://www.egroups.com - Simplifying group communications
>
>
--------------------------------------------------------------------------
Frank Suffling
Computing Officer, Safety Officer, Video Officer, VDU Assessor, Fire
Warden, Security Advisor, Trainee Supervisor.
Department Of Sociology, University Of Surrey,Guildford GU25XH, UK
Tel: +44 (0)1483 876984 Fax: +44 (0)1483 259551
<http://www.soc.surrey.ac.uk/carparking> UTP Discussion Forum
<http://www.soc.surrey.ac.uk/~scs1fs>
Email: Frank@soc.surrey.ac.uk
------------------------------------------------------------------------
Learn2 Avoid Junk Mail. Learn2 Shop for Bargain Airfares. Learn2
Weatherize Your Home. Learn2 Speak Wine. Learn2 Get by in French.
Learn2 Negotiate a Raise. http://clickhere.egroups.com/click/965
eGroups.com home: http://www.egroups.com/group/ukvac
http://www.egroups.com - Simplifying group communications
DATA Imported from archives: originally posted by Frank Suffling (F.Suffling@soc.surrey.ac.uk)
Do the coin mech lights come on ?, if not then you have blown the +12v
supply which would be why there is no sound also.
Frank.
At 02:05 27/10/99 -0700, you wrote:
>Thanks for the advice received so far
>ref. the lack of coin input and sound output
>on my JAMMA Cab.
>
>I have checked the earth connections and there does
>not appear to be a problem there.
>
>I have not yet had chance to check the fuses in the PSU
>but would like to confirm that, everything else works OK, the
>games come up on screen and joystick/buttons are OK. It is
>purely the fac that there is no sound and coins/credits
>are not accepted.
>
>Something else to mention is that each time I reset
>the machine at, when powered back up 1 Credit is automatically
>available for play on several PCBs where normally this
>doesn't happen. This happens on Major Title and Power Spikes
>(naff games I know!)
>
>It is almost as if 1 credit / coin is being registered
>when the power is switched on.
>
>Immediately before this problem occurred, I had ben changing
>the Major Title PCB for the Power Spikes PCB. Upon first power
>up with the Power Spikes PCB installed, no display came up
>and a high pitched whining noise was emitted from the cabinet.
>
>I detached and carefully re-attached the JAMMA connector
>and it powered up OK after that but without sound and
>coin input. These 2 PCBs have since been tested in my
>other, older JAMMA cabinet and they work fine in every respect
>so the PCBs are not damaged.
>
>Is it possible that by mis-aligining the JAMMA connector
>I could have caused this problem? Unfortunately there is a
>small amount of leeway when connecting which in its worst case
>could have led to each pin being connected to the one adjacent
>to its proper position e.g. PCB Pin 5 being attached to Jamma
>connector Pin 4.
>
>Sorry to ramble on, I'm just hoping that this info. may
>shed further light on the problem.
>
>Thanks Again
>
>
>Jason Howle
>
>
>
>------------------------------------------------------------------------
>Java or juggling?. Everybody learns something at Learn2.com. Where
>you'll find thousands of free 2torials, affordable online courses, and
>useful tips for everyday life. http://clickhere.egroups.com/click/964
>
>
>eGroups.com home: http://www.egroups.com/group/ukvac
>http://www.egroups.com - Simplifying group communications
>
>
--------------------------------------------------------------------------
Frank Suffling
Computing Officer, Safety Officer, Video Officer, VDU Assessor, Fire
Warden, Security Advisor, Trainee Supervisor.
Department Of Sociology, University Of Surrey,Guildford GU25XH, UK
Tel: +44 (0)1483 876984 Fax: +44 (0)1483 259551
<http://www.soc.surrey.ac.uk/carparking> UTP Discussion Forum
<http://www.soc.surrey.ac.uk/~scs1fs>
Email: Frank@soc.surrey.ac.uk
------------------------------------------------------------------------
Learn2 Avoid Junk Mail. Learn2 Shop for Bargain Airfares. Learn2
Weatherize Your Home. Learn2 Speak Wine. Learn2 Get by in French.
Learn2 Negotiate a Raise. http://clickhere.egroups.com/click/965
eGroups.com home: http://www.egroups.com/group/ukvac
http://www.egroups.com - Simplifying group communications
DATA Imported from archives: originally posted by Frank Suffling (F.Suffling@soc.surrey.ac.uk)