Hi all,

My first posting to this board so, go easy on me

We have a 1990 (approx) vintage Okuma LB15 Lathe, single spindle, single turret in our shop and have a small problem.

Late last December we had the X axis drive board die on us, something to do with Power Transistors on the PSU bit, and some other work to be done on the PCB attatched above it.

This work was done, the board replaced last week and the machine starts up and ran fine.

However, two days ago I was getting the machine ready for a job, got all the tools set, wrote the program (IGF mode). Program created ok.

Went from EDIT to AUTO so that I could select the new program and I got an error relating to the Bubble Memory. Unfortunately I did not write down the exact error, but machine still worked fine manually. As it was the end of the day the machine was then powered down.

The next day on powering up, the bootup sequence stops almost immediately with the following;

2011 Bubble Memory Read ERROR 20100000 'Parity'

Then you get something to the effect of;
SBC Monitor
>_

And thats it.

Have done the obvious in the back of the machine as in checking for any loose connections, but no joy.

Any advise greatly appreciated.

Regards,

Rich.