Mazak QT15 problem

I have a QT15 with a T2 controller. It has been running perfectly and run every day for the last three weeks. Turned on the next morning following a day of running and the computer was scrambled. It had a memory parity error on the screen and parameters were all jumbled. On the program and tool screens there were a lot of jiberish and ***'s. It was determined that it should be re-initialized. I did that using a Mazak service bulletin. The program screen now works but one of the tool screens does not have the list of tool numbers along the left side of the screen. Also now it has an alarm 10 (no signal from Z).

It appears to be a B3 or earlier version of T2 control. So board FX727 was the board removed and did the re-initialized process to.

I'm not sure what to do next to try and solve this problem.

Thanks for the help

Dave