When I turn on my LE9000, it starts up fine, but all of the buttons on the bottom right area does not work.
The data set button is lit, and all buttons in that area beeps when I press them.

When I hold the select and turn on the machine, all of the buttons there work.

The tracer traces, and the chuck/start/stop buttons work.

Hope this helps in helping me diagnose the issue.
Let me know if you need more info.
Thanks in advance.