Z Axis Stopped on My OmniSign Pro 3000

[Ray Scott]

I have been following all the testing and info on this problem. I might be able to help you direct to the problem.

There is a buffer-driver chip on the MPC-03 card. I would expect that one of the output pins is damaged. This pin is a direct connect to the "step" command on the stepper motor amplifier. Bad step pin ..... No motor movement.

I am sure that the MPC-03 card is out of production for a few years. If you can't get this card working, finding a new MPC-03 card will be nearly impossible.

A last ditch attempt for a dumb fix.... Check the 80-pin cable to see if you have bent any pins while connecting/reseating the MOC-03 motion card.

thanks ,
Ray Scott

[Amos De Pasquale]

Keith and Scott, I haven't had a chance today, but I will scope the o/p from the controller card, hopefully there is one. If there is an output, I will meter(ohms) the SCSI cable for continuity. The pins look ok, I have the pin layout for the plug. Failing this, I have a 6515 upgrade card that I have in possession for two years, but did not want to fix something that wasn't broken, now I may be cornered into doing the upgrade!. Thanks for the input, I will report back on what I find. Amos

[Keith Colson]

That's good advice Ray, its sounds like you know this kit. Amos, if you upload some photo's it would help.

Cheers
Keith

[Amos De Pasquale]

I am after an MPC-03 LV Laser Controller, does anyone have a spare???? Amos