Re: Partner 1F w/ Centurion V first start up problems
Been awhile since I messed with this. Thought I had the 3-axis runaway figured out, but apparently not. After sitting a couple months its back. So I cleaned the plugs going to the Glentek boards (long ones, blue wires) reseated them and took the belts off the servos just in case it ran away again. I did test for 5v at the card cage connectors back when it was first suggested, and all 3 were fine. Powered up, press reset, and everything was fine. Pressed home here and was able to jog each axis (belts still taken off). Pressed e-stop and reset a bunch of times and everything seemed hunky-dory.
So I put the belts back on and put everything back together. Powered up, reset, homed, sweet. Ran the table and spindle through a jog cycle for awhile. Went through the tuning the Glentek boards and managed to get the following error corrected.
Now today I go to try out some of the new tooling I finally managed to get, and on first drive reset all 3 axis try running away again. I did reseat the Glentek connectors again but that didnt help this time. I'm at a loss at this point.
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Re: Partner 1F w/ Centurion V first start up problems
check card cage 12v -/+ in card cage power supply
page 5 in troubleshooting guide section 2
Ron
Re: Partner 1F w/ Centurion V first start up problems
Checked for 12v +/- at the plug going to the motherboard. Checked out fine. On a whim I unplugged the computer from the 120v line conditioner wired into the machine and plugged it directly into a wall power source. Guess what, reset just fine!
So I plugged a multimeter into each outlet on the conditioner and had a helper hit e-stop, reset a few times. At idle it hovered around 116v. When reset from e-stop, it jumped to 120-125v for a split second. Could it be this little power surge causing all the trouble? And would wiring in a new line conditioner solve this, or is it normal for that to spike on reset? Is there another component down the line from the conditioner I should be looking at that would cause it to spike?
Re: Partner 1F w/ Centurion V first start up problems
Well, turns out I was wrong, that didn’t help my runaway. Back to square one again.
Re: Partner 1F w/ Centurion V first start up problems
Have you pulled acroloop cards out and clean slots and gold fingers and re installed?
Re: Partner 1F w/ Centurion V first start up problems
I did have the card cage out last fall to clean the card fingers and replace the CMOS battery. I can’t remember if I cleaned the card slots themselves though. I’ll try that again and reseat everything today. Are there any tests I can run on the card cage components themselves before connecting it to the machine again?
Re: Partner 1F w/ Centurion V first start up problems
Well, I believe I found the problem. Looks like the -12v trace on the board is corroded to hell from that CMOS battery leak. Probing for continuity from the ATX power header to the -12v pin on the ISA slot showed nothing. Checked the +12v the same way and it was just fine.
So it looks like I'll be searching for another old antiquated 386/486 board or diving into putting my own SBC together.
https://farm2.staticflickr.com/1792/...65f47e04_z.jpg386 board is toast by Michael Hagen, on Flickr
And for comparisons, this is how it looked back in October
https://farm5.staticflickr.com/4464/...9755a58e_z.jpgUntitled by Michael Hagen, on Flickr
Re: Partner 1F w/ Centurion V first start up problems
Id try and run jumper wires before tossing board. What do you have to lose? Quite a few of my acroloop cards and sim disks have evidence of that
Ron
Re: Partner 1F w/ Centurion V first start up problems
I did in fact add a jump wire for the -12v trace and I was able to run the mill without a hitch. I should be able to make some chips while I piece together a SBC for this thing after all. Thanks to rl49 for pointing me in the right direction.
Re: Partner 1F w/ Centurion V first start up problems
My original motherboard was toast for the same reasons. I found a NOS replacement on Ebay for under $100 if I remember correctly and a friend rebuilt the whole pc using a CF card instead of the simdisk and hard drive.
Re: Partner 1F w/ Centurion V first start up problems
I can help with an older 386 Motherboard or a SBC update
Call me
952-288-6340
sportybob