Gallery, Projects and General > Project Logs
Oh Blimey I bought a CNC Lathe !!!!
awemawson:
OK a tad more progress. The spares arrived from the USA today. The main CPU card (MC161-1), a colour monitor drive card (MC724-1), and an input output card (MC301).
The original symptoms (while I've had it - remember it was faulty and had previously been worked on) were totally black / blank monitor screen, no RGB Hsynch or Vsynch signals as measured with a 'scope, and various LEDs on the cpu card staying resolutely 'on' when reset / rebooted whereas they are supposed to come on then go off.
With the replacement CPU card the LEDs seem to do what they are supposed to do. With the original monitor card and new CPU we still have a black screen. Putting both replacement CPU & monitor cards in we get a white screen showing scan lines and flyback lines so I assume we now have H &V synch even if no video!
Not tried the i/o card but it's almost certainly irrelevant anyway !
So as I say, a bit of progress but no definite conclusions yet.
awemawson:
Well a bit of a leap forwards in progress. I managed to track down an FCA330HLX-V controller in unknown condition. Mine is an FCA320HLX-V the main difference being that my original is a '6 slot' whereas this one is a '10 slot'. The card compliment is very similar but not identical, the 10 slot having more memory arranged differently on the cards. BUT the good news is it does seem to have come from a TX8-F as the eproms in the monitor drive card say so! This controller was sold in an unknown state, so a bit of a pig in a poke, however it has allowed me to use it as a test bed to check things out to the extent that at last I have a picture on the screen - hooray! So far it seems that just the monitor drive card MC724-1 on the '10 slot' is fubar and using one I got elsewhere up came a picture.
Photos to follow: first the original '6 slot' controller, then the '10 slot', then the first evidence of LIFE :ddb:
awemawson:
Well a bit more head scratching and I began to think about character proms on the monitor card. My original card seems to be duff, as does the one in my newly acquired 10 slot controller - BUT the later had a character prom on it labelled 'TX8-F' which is the TRAUB name for this variant of the controller. The one that came to me by another means (and works) was not so labelled. It's only an eprom - go one swap 'em over - so I did. Ho ho - things start to make sense. Start up screen no longer has the odd blue blotch but says 'Meldas 300V Series' and I can trot around the controller finding all sorts of interesting displays, monitors and input screens - loads of errors reported from the attached hardware (spindle drives, axis drives etc) but that's hardly surprising as I'm running without any parameters loaded either to the drives or to the controller. Also the 'Ladder Logic' eprom is from the 10 slot control not my 6 slot one Well loads more learning to come I expect! Here's a few screen shots:
Pete.:
I gotta say I admire your tenacity. I hope it all works out for you based on effort alone!
Pete W.:
Hi there,
Many years ago, I worked on a project that included a hydraulic power supply. (We sourced it from a sub-contractor.) It used a gear pump. Because it's a positive displacement pump, the oil has to have somewhere to go when the rest of the hydraulic gubbins is not active so there was a relief valve across the pump output.
Thing was, it used to make the most fearsome noise, really deafening.
Does yours suffer the same?
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